I really thought Rumble was going to fight at MW. He said in an interview that he was going to move up to MW, but wasn't going to make a permanent move there. I think this is a bad idea on his part. He shoulda took a fight at MW and given that division a try. He's big enough (he would still be of decent size in that division), he'd have a better gas tank because he wouldn't be cutting as much weight hence also adding to his punching power. This would have been a lot easier on his body given that he's had a year long lay off as well.
But, since that is not what happened I will get back to the topic. I think Rumble has more tools to beat Hardy than Hardy does to beat Rumble, simply because of Rumble's wrestling. Is it great? No, but I think it can be enough to give Hardy some trouble and keep him guessing, setting him up for a huge Rumble KO. This is gonna be a slugfest, but what this is really going to come down to is what kind of mentality will Hardy have, and what kind of shape will Rumble be in?
Despite this I want Rumble to win by massive KO. WAR RUMBLE!!!!