They used the 2.93 i7 from '10 and compared it to the new machines, its not a fair fight. Even the 3.1 i5 spanks the old 2.93 i7 in games because of the new processor. Still i7s are best for CPU intensive tasks
http://barefeats.com/imac11b.html
http://barefeats.com/imac11b.html