Cherry picking ??? i posted 4-5 games where the FX is faster and another 2-3 games where the FX is very close.
Sigh. Another one of "those" threads...

The problem is, there are dozens of games where it isn't:-
AC Unity : http://gamegpu.ru/images/remote/htt...Action-Assassins_Creed_Unity-test-ac_proz.jpg
Alien Isolation : http://gamegpu.ru/images/remote/htt...ction-Alien_Isolation_-test-alien_proz_nv.jpg
BF4 Dragons Teeth : http://gamegpu.ru/images/remote/htt...lefield_4_Dragons_Teeth-test-bf4_proz_amd.jpg
Borderlands PS : http://gamegpu.ru/images/remote/htt...erlands_-_The_Pre-Sequel-test-border_proz.jpg
Bound by Flame : http://gamegpu.ru/images/remote/htt...t_GPU-Action-Bound_By_Flame-test-bbf_proz.jpg
Civ Beyond Earth : http://gamegpu.ru/images/remote/htt...ion_Beyond_Earth-test-civilizationbe_proz.jpg
CoD AW : http://gamegpu.ru/images/remote/htt...Duty_Advanced_Warfare-test-cod_proz_intel.jpg
DayZ : http://gamegpu.ru/images/remote/htt...ories-Test_GPU-Action-DayZ-test-dayz_proz.jpg
Dead Rising 3 : http://gamegpu.ru/images/remote/htt...t_GPU-Action-Dead_Rising_3-test-dr_3_proz.jpg
Evil Within : http://gamegpu.ru/images/remote/htt...ion-The_Evil_Within_-test-evilwithin_proz.jpg
Fable Anniversary : http://gamegpu.ru/images/remote/htt..._Anniversary_-test-Fable_Anniversary_proz.jpg
Far Cry 4 : http://gamegpu.ru/images/remote/htt...Test_GPU-Action-Far_Cry_4-nv-test-fc_proz.jpg
Grid Autosport : http://gamegpu.ru/images/remote/htt...RID_Autosport-test-GRIDAutosport_proz_amd.jpg
Lichdom Battlemage : http://gamegpu.ru/images/remote/htt...ction-Lichdom_Battlemage-test-lb_proz_amd.jpg
Lords Of The Fallen : http://gamegpu.ru/images/remote/htt..._Of_The_Fallen-test-LordsOfTheFallen_proz.jpg
Metal Gear Solid V : http://gamegpu.ru/images/remote/htt...Gear_Solid_V_Ground_Zeroes_-test-mgs_proz.jpg
Metro LL Redux : http://gamegpu.ru/images/remote/htt...Metro_Last_Light_Redux-test-mtero_ll_proz.jpg
Shadow of Mordor : http://gamegpu.ru/images/remote/htt...hadow_of_Mordor-test-ShadowOfMordor_proze.jpg
Styx Master of Shadows : http://gamegpu.ru/images/remote/htt...Styx_Master_of_Shadows-test-StyxGame_proz.jpg
Thief : http://gamegpu.ru/images/remote/htt...-stories-Test_GPU-Action-Thief_-test-proz.jpg
Vanishing Ethan Carter : http://gamegpu.ru/images/remote/htt...f_Ethan_Carter_-test-AstronautsGame-_proz.jpg
World of Tanks : http://gamegpu.ru/images/remote/htt...t_GPU-MMO-World_of_Tanks_9.0-test-wotproz.jpg
On a good day, AMD FX-8xxx are as fast as an i5. On a bad day, 220w $230 FX-9xxx can get beaten by even a 55w $110 i3, even in quite a large number of 2014-2015 AAA games. AMD's problem isn't performance on a good day or "embarrassingly parallel" integer apps or synthetics, it's a
severe lack of consistency averaged over hundreds, even thousands of games, old & new. Regardless of how they're "branded" or "marketed" on the basis of
"a 3 is lower than a 5 or 7 so it's 'low', whilst an 8 is higher than a 4 or 6 so it must be 'high'", there's a very good reason why they're priced relative to the i3. Neither i3's nor FX-8350 are "high end" chips. You only have to look at their prices and min fps slowdowns in many AAA games to see that.
That doesn't mean either are "useless" for gaming, especially if you are a "middle-weight" gamer who doesn't obsess over playing only bleeding edge games on Ultra. If you limit yourself only to certain types of newer games, it may be less of a problem, but in general, the more "wider" your collection of games, the more likely it is you will "bump heads" with FX chips getting any one core saturated far earlier due to lower IPC. Even 10-20 year old games like Operation Flashpoint : Cold War Crisis with 3,000-5,000m draw distance, Morrowind / Oblivion, or larger community modules on NWN1 or even Thief (1997) extra large community mods or 10,000 monster Doom WADs can still saturate a single modern CPU core (when everything runs on only one core) and result in 25-35fps on FX chips with 1 core at 100% and 7x sitting virtually idle, whilst even a Haswell Pentium manages +50fps. Fewer faster cores will give more consistency than slower MOAR CORES. It's exactly the same reason why i5 Intel gamers aren't going to "upgrade" to a 16-core Intel Atom based "gaming rig".
AMD have "bet the farm" on all software developers everywhere magically hand-tweaking every line of code for 8 cores, only to find half the software
doesn't naturally scale that well, whilst the other half can scale slightly better but simply isn't worth the effort or increased debugging complexity, etc, (ie, games being booted out as quickly & cheaply as possible with little mind to optimization for budgetary / time constraint reasons). Benchmarks showing a CPU (FX-8350) with +300% more cores plus +30% higher clock speed on top gaining as little as +10-15% speed overall vs a dual-core being a perfect illustration of poor "many weak core" multi-thread scaling vs better "strong IPC" (thread independent) scaling in games in general, even in cases where the i3 occasionally loses.
As for the context of the thread, genuinely "high end" gamers will have top-end rigs in general : high-end (or multiple) GPU's, 16-32GB RAM, 1TB SSD, expensive monitors, gaming mice, headsets, etc. Suddenly arguing over $10-20 budget CPU price differences for a +$1,000 multi-GPU rig is utterly pointless, and an exercise in low-end to mid-range people on a tight budget sticking "high end" power-geek identity labels on themselves to not feel left out.
Really this stuff has all been done to death, over & over & over & over & over & over & over & over & over & over & over & over & over & over again...