1) It's live
2) It's on TV
3) It's a 6man SNG with quickly rising blinds.
So, people are shoving there with a huge range other than just AA (AK, QQ, AQs, JJ, etc)...don't forget that if villain (with AA) thinks 'hero' can fold stuff like QQ-KK here, he should 'squeeze' with a very wide range.