I would prefer the Intel version since it's better price compared to performance with the Core i5 CPU far exceeding the AMD's capabilities.
As for graphics you won't know the difference in the games you mentioned and since you also won't be running high screen resolution with the 1366x768 display.
Also the thing that makes me lean towards the Intel option the most is that it's an Asus notebook with excellent reviews regarding actual quality and warranty.
I just noticed that the Futureshop site mentions the HP DV6's AMD A8-3530MX APU as a 2.6 GHz processor. When in fact it's a 1.9Ghz APU (when all four APU cores are active). Maybe they just 'don't understand' or maybe they're being sneaky.