But you do need to consider a few things:
1.)The AMD A10 chips are 35W TDP ones
2.)All the IB Core i7 chips so far are 45W TDP ones
3.)The A6 tested had a 45W TDP
4.)The 45W TDP Core i7 CPUs have more TDP headroom for the HD4000 IGP meaning it can Turbo to the maximum clockspeed more often
5.)The IB Core i3 and Core i5 CPUs will have HD4000 IGPs with lower Turbo clockspeeds and lower CPU performance. The lower TDP probably means the IGP will Turbo to the top clockspeed less often.
6.)The Core i7 systems are most likely to cost much more.
I would also suggest you look at these reviews too as they test more games:
The latency tests in the first review are quite interesting - I really hope more websites also add this.
It does seem for some games,the HD7660G is not much faster than the HD6550D,whereas in others it is much faster. It is hard to say whether it is down to the VLIW4 shaders or driver issues. The other aspect is that CPU performance might be an issue,but considering that Skyrim does quite well but not a game like Batman it indicates something else is going on.
Now,the major is cost IMHO. Hopefully,the laptops just using the A10-4600M only,won't be Core i7 level pricing but closer to Core i3 and Core i5 CPUs.