All the districts aren't calculated but I'm estimating Romney won 224 districts to Obama's 211. In addition I'm estimating that there will be roughly another 16 districts that'll be R+0.1 or greater that Obama won. While it's true Democrats do cluster a lot of this is due to Republican line drawing. Romney won 9 of 14 Michigan CDs. He won 7 of 11 in Virginia. I'm pretty sure he won 12 of 16 in Ohio, although OH-14 could've gone Obama.
I'm thinking that district 218 is going to be around R+2.6.
It'll be hard for the Democrats to win the House this decade.