The crowd really was split during the Austin/Rock match, I'd say it was probably 60/40 Austin but the Rock fans were louder. It got a little quiet at the beginning of Brock/Angle but it definitley picked up once the match got going. Although, I was a little surprised by the reaction Brock got when he won the belt, it wasn't as loud as I expected maybe because of the SSP.
HBK and Jericho put on an awesome match and there was lots of HBK chants during the match, even a few Y2J ones as well. There was almost silence after HHH beat Booker. The place was out of control when Goldberg was announced for Backlash and Piper may have gotten a bigger pop than Hogan did when he came out. But during the Hogan/Vince match the crowd was firmly behind the Hulkster the whole way.