Outside of Italy teams don't just sit back, but they also press which makes things very difficult. Juventus wins by very small margins, even though it's on a consistent basis. That margin is made even smaller when teams come out and press.
As it weird as it may sound, with Pogba out, I think facing a Madrid or Barcelona would be just as risky as facing Monaco. Allegri will at least have the reassurance that Monaco was shit in the second leg against Arsenal.