To put it simple the build you have is much better than the one your friend created for a couple reasons:
His CPU is equal to yours, (or close enough that it doesnt matter)
Your GPU is much better than the one he has selected, even if there are just 2.
Your motherboard is better for most purposes. (That x79 isnt great)
Everything flows on your build much better and you have an ssd which is a big performance difference.