Floyd has too much pop and is WAY too quick for Joe. Probably goes the distance and might be a reasonably entertaining fight.
Hungry Joe that fought Marciano would beat Patterson dec or maybe even late TKO. Joe was hard puncher with good chin and awesome skills, so do not think that Patterson would have easy time with him.
Coin toss, 50/50 Prime Patterson could have the upper hand, but Walcott is a very, very dangerous customer. If Patterson as muchs as slips he will be up for a nasty surprise.