And I'd say the majority of those 'stars' were aided by better booking. The current WWE locker room has a lot of talent, but it's seldom promoted properly.
Let's count it...
Cole-Lawler (2009-now)
John Cena
Randy Orton
Batista
Shawn Michaels
Triple H
The Undertaker
Edge
Chris Jericho
Rey Mysterio
CM Punk
Daniel Bryan
Cody Rhodes
Dolph Ziggler
The Miz
Mark Henry - At least for this monster run, plenty to sink your teeth into
Jack Swagger
Evan Bourne
Sheamus
Sin Cara
Shelton Benjamin
Montel Vontavious Porter
Christian
Jeff Hardy
etc. etc.
There's plenty of talent there, the problem is, the WWE simply don't use them. I don't really care to see an Attitude era revival (at least, Russo era Attitude) but I'd like to see them adopt a similar television structure that era had, where they made use of every segment. Right now, the biggest problem with the WWE is how they essentially use the mid-card guys as filler designed to space out the main event segments. It's nearly impossible for wrestlers such as Kingston, Ziggler and Bryan without granting them mic. time and involving them with storylines that hooks fans and opens up more markets for the company other than those who like Cena, Punk, Orton or Sheamus.
So to bring this around to what I was saying, I wouldn't blame those talents I listed, at least the majority of them, I just don't think the WWE pays them enough attention and in a lot of ways their promotion of certain stars reminds me of South Park's interpretations of trailers for those weak as piss comedies.