Pro and Con of the Collectors.
Pros
At http://youtu.be/vz9Jh9myKQY?t=12m51s you can see the bottoms are the what the Quest Upgrades do for Villains. (I wish it had the exact stat number for those but that would seem picky as the other ones haven't for just regular Skylanders.)
Also the right side on that part it shows a pic of the Evolution's of the Villains.
Cons
It doesn't seem to mention Alt Deco's Stats for in game, Nitro Krypt King etc.
The other thing was it's not a 100% CE. The it's a secret to everyone thing that I can't get into here.