1. Who is the biggest heel today?
Wade Barrett. Even in NXT he was getting a considerable amount of heat, both by association to Chris Jericho and his look and persona screamed heel. But since Nexus formed, he has steadily garnered more heat. Starting with attacking just about every face, feuding with the number one face, John Cena, making Cena his indentured servant, and finally causing Cena to be fired. As a result, Barrett couldn't even cut a promo because of the MASSIVE amount of boos he was getting this past Monday. No question, Barret is the top heel.
2. Who is the top face today?
It's close, but I have to give it to John Cena, although Randy Orton is right up there. Yes half the crowd boos him(with me being part of that half lol), but he still gets the biggest pops, rivaled only by Orton. In terms of drawing power, his merch sells. He is everywhere, even outside of wrestling. Like Steve Austin and Hulk Hogan, John Cena is the top face of his era.
3. Who is the biggest heel ever?
I gotta go with the general consensus and say Mr. Vincent Kennedy McMahon. He's the evil boss that can do ANYTHING he wants, and there is nothing anyone can do about it because, well, he's the boss. The Montreal Screwjob, "Bret screwed Bret," and the Austin-McMahon feud set the tone for the Attitude Era. And even after the Attitude Era, Vinnie Mac still was able to gain huge amounts of heat. Zach Gowen, beating his own daughter Stephanie in an I Quit match, even calling out God. And what also makes McMahon the greatest heel, like an above poster said, is his ability to turn face, then heel, than face again in one night. Not to mention some of his heat is also legitimate with Montreal, killing the territories, ending the Monday Night Wars by buying WCW and ECW, the subsequent burial of most WCW and ECW stars, etc. It's Vince McMahon.
Who is the greatest face of all time?
I say it's a tie between Steve Austin and Hulk Hogan. If you're going by pure face, it's Hogan. Hogan put wrestling on the map. EVERY young wrestling fan from that era were Hulkamaniacs and wanted to be like Hogan. The "take your vitamins, say your prayers" shtick was huge. And who can forget bodyslamming Andre the Giant? Even in the 90s, Hogan was a big draw and stayed that way courtesy of the NWO.
Austin, who was the opposite of Hogan, represented the everyman, anti-authority and the like. Who didn't want to beat up their asshole boss and drink beer while doing it? And with McMahon as the perfect foil, Austin skyrocketed.
To reiterate, it's a tie between Austin and Hogan.