Sorry to criticise the review but it lacks depth in terms of results as their isn't enough infomation to give conclusive evidence i.e. not enough Benchmarks as some games fair better on one CPU or the other - check other reviews.
Would of been a more interesting read if you did a clock for clock analysis just to see if the INTEL i7 920 @ 3.4GHz gave a significant boost or not over the stock 2.66GHz.
Then do another test with both CPU's at 3.8GHz to see if either CPU can take advantage of the 5870 graphics card.
Also would of been more interesting if you had added results using Lynnfield into the equation.
On a positive note for Fred Bloggs buying a PC from a retail chain PC outlet the results will be good for the non-overclocker who isn't bothered about these things.