It's not that easy to just build mega stars...you can count them on one hand, Hogan, Savage, Austin, Rock, Cena....who else has WWE built into a Global Superstar from scratch? You could argue Edge, Hardy, Batista, Orton but they are not on the level of the 5 just mentioned, heck, maybe even strip Savage and Cena from that list.
Hogan, Austin, Rock, those are guys with 'it' ... you can't describe it, explain it, or bottle it....it's just 'it'