After reading benchmarks from one person testing both, I'd think they would be foolish unless they are on that tight of a budget.
I'd personally spend the little extra and get the 2011 if I were buying a laptop now. It's faster, it has the new connector (and new processor), and it's not all that much worse for games and has the same battery life. So the only thing it's worse at is games and the guy testing it said he couldn't really see the difference (only his testing software could) when he played so it's not even tellably worse.
Oh, and small thing but it also comes with a bigger HD (I wish mine did. It's hard drive was the same as the one I put in my MB years ago... and I know I didn't spend more than 100 dollars on the HD I put in my MB years ago so they should have been able to put a bigger one than that in the 2010).