like I said earlier even Anandtech mentioned in some article that AMD cpus and the newer i7 cpus were indeed more responsive than Core 2. heck if I can find the article since I never imagined I would need it and google is failing me.
That would indeed be interesting, and I'd be the first to admit that I was wrong if there's some authoritative proof. It seems incredibly doubtful though, one must remember the era right around the C2D's launch date, there were a TON of AMD fanboys, including me, simply because what they had was so definitively better. After C2D starting seriously drawing blood and winning basically every performance benchmark, the loyalists to the company rather than just the best performance would have jumped ALL OVER something that proved that the X2s were faster/snappier. Other than some ad-hoc commentary by end users, I never remember seeing anything of the sort. Maybe at AMDZone you could find many people that would agree with that.
Like I said, I personally had an old E5200 that was supernaturally quick in windows, and it was with a cheap mobo/ram/hdd/etc as a 2nd system. I've seen similarly superquick X2s, even in Socket 939 form with DDR1. As in, virtually instant everything in windows until you start loading something that takes considerable HDD access (say launching a large game). But menus, opening simple apps, etc, have no delay at all beyond say 1/10th of a second.
As I've seen over time though, I've seen a ton of systems of every conceivable type which just weren't fast/snappy at all, from Athlon 64s to i5 sandy bridge laptops with SSDs. Simply too many variables.
But reducing it to this :
Have you ever seen a C2D system that produces no noticable delay in common tasks? If yes, then it's impossible to say that a C2D CPU alone should produce poor results unless something is broken/poorly configured, or mated to hardware that is reducing performance.
As I've seen personally systems with C2Ds, Core Duo, Athlon 64, Opteron, Athlon 64 X2, Core 2 Quad, Phenom I, Phenom II, Athlon II, i3, i7, etc, etc all perform with beautiful snappiness (I'm picky as hell), I can't agree with blaming it on a CPU, unless it's broken or throttling.
Perhaps more Intel-based motherboards suffer from performance issues than AMD ones, it wouldn't reflect my real-world experience but I couldn't put it past the realm of possibility.