Wrestling fans can see Sting every week on TV, but not a great deal of them choose to.
I certainly don't think he'd make any kind of major impact at Wrestlemania. Sure, he might recieve a nice pop, but not as big as the Undertaker or Triple H and not even in the same league as Hogan or The Rock.
Yes, I know I could watch Triple H vs Cena on tape, but here in the year 2007, I'd rather opt for a DVD....heh....I understand your point, but your point is pointless. Just because a match has happened before, it doesn't mean it won't draw big money if it happens again.
I personally think Batista vs John Cena would be a great match and would draw big. Both guys are mega over in the most popular wrestling company in the world - you may not rate their wrestling skills, but the masses love both of these guys. When they were the final 2 in the Rumble a few years back - the crowd were going "Hulk Hogan and the Ultimate Warrior - ONE on ONE! [/quote=Jesse Ventura] crazy.
As for your list of WCW guys who made it big in the WWE.......well no, not really. Ric Flair had a mediocre run in the Early 90's - haven't seen any records which prove he drew huge money. Since his return, he's done nothing. Sure the fans love him, but he's not selling ppv's. Booker T had a World title run about 4 years after he debuted in the WWE so much like Chris Jericho and Rey Mysterio, was a WWE guy when he had major success. Of course, none of these guys have ever really sold massive ppv's, so it's all a mute point.