That's nifty looking alright until you compare it to the current high end graphics hardware which has around 1500 of those cores (my gtx670 has 1300). Once more games really start using all those cores for things like physics and interactivity you will see that phones have nowhere close the ability of modern PC HW.
With that many cores you can do some things orders of magnitude faster. Take this Nbody sim my friend and I wrote for example.
And massive heat dissipation. Imho that's the real killer. Its going to be a while before we start seeing passively cooled SoCs with Crysis level graphics. Some day, yes. Next year? No way.
I can't even imagine how ridiculous a phone with active cooling would be. I've seen a few wintel tablets with active cooling and they look/feel like garbage compared to their thinner lighter ARM based android/iPad counterparts. The extra size would be way even pronounced on a phone.
With that many cores you can do some things orders of magnitude faster. Take this Nbody sim my friend and I wrote for example.
http://www.youtube.com/watch?v=xeOUxTSjowY&feature=plcp
It computes an n^2 algorithm over 20,000 particles at 30fps, and that's with my old card which has 200 cores.
You just can't do that without massive parallelism.