Except that he hit him with his shoulder pad, which is allowed and is not targeting.
Not luck, Georgia just didn't give up, and scored several answered points in the second half.
The concussion came from when his head hit the ground. Sucks, but it's not a penalty.
No bias, Georgia just played slightly better than Ohio State. Great game by both sides, but Ohio State came up short (wide left) and Georgia won.
And why was Georgia playing in Atlanta (not home, as they play at Sanford Stadium in Athens), oh yeah, because they were the #1 seed (due to being undefeated and winning their conference), and the #1 seed always gets the semi-final that is closest to home (this year just happened to be in Atlanta, it could have easily been Miami or New Orleans in other years).
Personally I wouldn't mind if TCU won. I like seeing the underdog win, and TCU being in the Final, and possibly winning, is why I've always supported playoffs and think it should be more than 4 (or even 8) teams.