They're both 17" 1600x900, 4GB memory, same brand. Pretty much identical except for processor. And yeah, they're both using the IGP. I know the A8's GPU is a bit faster and I know the i3's CPU is a LOT faster, and I know that Starcraft actually does care about CPU quite a bit.
They're also both four-thread CPUs so I doubt if AMD can acquit itself with a multitasking advantage... and the i3 will pry improve battery life too.
So you'd go with the i3 I assume?
Oh, I've got a Sammie 830 SSD on the way so whichever machine I get will have that going for it. I'm downloading SC2 now to test it on the A8, will post back soon. Doubt if I'll be able to run 1600x900 even low res but we'll see... I'd be happy with 768p medium detail, which seems reasonable since my last laptop with an i3-2330+HD3000 managed it pretty well (with some annoying framerate drops during big fights).