Hard to say since we almost never play in those type of conditions.Honestly, in some ways bad weather might help this team. I get the fumble angle but also imagine it would be very hard for them to tackle Milroe if we could get his running game going.
If he had a straight line breakaway run he might could score if the defenders are losing footing taking angles to get to him.
But Milroe also doesn't have great body control or side to side wiggle so he could just as easily trip himself up the way he likes to run east-west.
Probably the best matchup for Bama is PSU because James Franklin is the Michael Jordan of James Franklins.