with prep time...I'm inclined to believe that red skull would win...he has more resources to utilize...bane has to make due with his own...but it's not a lot to work with... even so.. red skull is basically an evil geanious...while bane's a very clever and intelligent bastard himself, he needed a lot more than one day to start his assualt on gotham...
in a straight up fight...bane should win...in a battle involving prep...skull takes it...
it means both characters have one day to prepare themselves before the fight takes place.....red skull has way more resources than bane he can more easily aquire knowledge about his opponent and bring in more effective weapons to the fight...bane's resources are somewhat limited since he usually begins his jobs by workig alone and then builds up a base afterwards....red skull will win this simply because he has more resources...although he's more intelligent than bane...it's not by much so I don't think that it would come down to that..resources however...