GH3 Retail vs Beta Face Off Comparison - Through the Fire and Flames

This song appears to have no real difference in P1/P2 marking. However, the outro of this song perfectly shows how they weighted the note scores. Once it gets to the last change in player marking (at about 7:06 or so), you can very clearly see how despite playing the exact same notes, P2 slowly gains until it takes the lead with the last note. It seems like P2 always gets a very slight boost as compared to P1.
GH3 faceoff fuckin sucks man hahaha
Retail P1: 572628 Retail P2: 572647
Beta P1: 587023 Beta P2: 566031