If Lamar wins Wednesday & Allen struggles against the Jets, Lamar will likely win MVP. You can't ignore one guy playing well against two playoff teams while the other struggles against two bottom feeders. The Detroit game will be a distant memory. As a Bills fan, and being objective, I'd vote for Lamar in that case.
If Lamar loses Wednesday, they still need to play starters against the Jets. You can't be resting guys for two straight weeks before the postseason begins. That's historically how one seeds would get upset.
Speaking of Lamar losing Wednesday, that might wrap up the MVP race if Allen plays well against the Jets.
Bottom line is no matter what, we can't have backups playing the entire game against the Jets. Too much rust.
Teams who win three SB's in a 5 year span will get the benefit of the doubt compared to a team that hasn't even come close to making the SB.