I beg to differ. As most of you will know I will always vote Hogan in these discussions, especially over Stone Cold. Now as for joejoe's (and also some other) posts:
1) Yes of course, the Outsiders were important to the nWo. It was more or less an open declaration of war between WWF and WCW at the time, and it was blurring the line between fiction and reality, and no one knew what was really going on. That was what made it great, and you have to give Eric Bischoff all the credit in the world for conjuring that and pulling it off the way he did. However, it was Hogan as the ultimate face turning to the ultimate heel that made the nWo last so long, no doubt about it. First off, I believe a lot of people a) wanted to see Hogan get his ass handed to himself for acting so bad and b) at the same time, they wanted him to revert back to Hulkamania and kick the "truly evil" nWo butts. And both things didn't happen for A LONG TIME, and this is why it worked so great. If it hadn't been for Hogan, and people wishing for him to turn again, or at least get his ass handed to him, people would've lost interest in the nWo a lot earlier, in my opinion. Sting couldn't have pulled it off; of course he was WCW's biggest face - but that is just the point: He was WCW's biggest face; Hogan was WRESTLING'S biggest face.
2) Stone Cold also did NOT put himself over. You can't do that. He also had great, great people to work with. Not as "his stable", but as his opponents. He had Bret Hart, who turned him into a star overnight when he made him "pass out" in the Sharpshooter. He had the likes of HBK, The Rock and Triple H to wrestle and feud with, and most importantly, he had the one character as adversary that put Stone Cold on the map like no other: Mr. McMahon. If not for the boss of the company playing that "evil boss" character that SCSA could rebel against, Stone Cold would arguably never have become as big as he did. So to give Stone Cold sole credit for his success is just as short-sighted as to claim that Hogan started the biggest boom period of wrestling all by himself. Both Hogan and Stone Cold were the two biggest factors for their respective success of course, but both had an environment to support them; Hogan in the nWo, and Stone Cold with Mr McMahon.
3) I still believe that The Rock was by far the more talented of the Attitude-Era's two biggest stars, and would've outshone SCSA by a large margin if he had remained. But that is just hypothetical; the way things are SCSA is the more important guy and greater wrestler of that era, no doubt about it. But not bigger than Hogan. Well yes, Austin made the people change the channel after 97... slowly. Back in 98, WCW was still kickin' WWF's butt, and it wasn't until WCW's product became really BAD that WWF managed to beat them again. Of course Austin was one of the main reasons, because his stuff was a lot better than the later-day WCW stuff. And once again - Austin's viewers were already there when he made them switch the channel; Hogan created them out of thin air, so to speak, and made people watch wrestling who didn't even know what it was. Twice.
Of course Hogan's face gimmick didn't work anymore in the 1990ies. But the simple fact that he did the heel turn which was so important for him, and made THAT work just as well, almost putting the competition out of business, just as he had made Hulkamania work in the 1980ies is just another testimony to the greatness of Hogan.
So in my opinion, Austin, despite WWF/E's dire days back then, had a much easier task than Hogan had had in the 1980ies, no doubt about it. WCW was beginning to fail, WWF had the more interesting program for the target audience that WCW had catered to and won over in the first place with their more mature nWo programming after all the comic-like stuff of earlier years; WCW had basically brought its own curse upon itself. They managed to appeal to a new audience with the new direction, but ultimately failed to step it up yet another notch and retain that audience when people began to lose interest because of bad angles, and WWF and Austin stepped in to carry on where WCW could not. So truly, nothing to take from the skills of Austin and his greatness - but it still is nowhere near the greatness that Hogan had, and showed for the better part of 20 years.