Overrated
Dolph Ziggler - Everyone thinks he's awesome but I disagree. See
this post for an explanation.
Alberto Del Rio - Basically the same explanation as the one I gave for Ziggler, except I find Del Rio to be boring rather than just average. His beat feature is his ability to portray a snobby rich guy. Apart from that, he's poor. Mic work extremely repetitive. Ring work almost always dull. Don't understand why he is so well-liked.
The Big Show - While his size is no doubt impressive, it is a curse as well as a blessing as it severely limits him and his opponents in the ring. 99% of his matches are snoozefests. He has moments of greatness on the mic but most of the time he's unimpressive.
I was tempted to put Miz or Cesaro in the third slot but, unlike Big Show, both guys have been improving/growing on me in recent weeks.
Underrated
Drew McIntyre - He deserves so much better than what he's getting. He's just as good at the bruiser brawling style as Sheamus and Barrett, yet the latter two are main-eventing while Drew is stuck in a goofy stable after being irrelevant for months on end. Not a brilliant talker but he's more than capable of a good promo, and he's proven he can be a great heel with his awesome feud against Kofi/Teddy Long a couple of years ago. He gets more underrated points as almost everyone on PW dislikes him
Trent Barreta - He's awesome.
Tyson Kidd - He's the standout of the WWE-irrelevants. Always puts on a good match regardless of the length or opponent. One of the most versatile workers in the company.