Operation Sports have come out with
an attribute guide which makes full use of the rating system, as opposed to 2k's lazy ratings which are overinflated and only assigned in increments of 5. It does a great job of actually making everyone play more like their real life counterparts, and it gives you a greater chance of having realistic sim results along with competitive matches from guys of similar levels. The spreadsheet includes basically everyone currently in WWE including people not in the game so you can sync up your CAWs, and they're working on getting all of the legends synced up too.
As it says though, don't be blinded by the overall ratings. 80 is essentially the new 100, but the bulk of the main WWE roster fall within 40-60. It's the actual attribute ratings that set them apart.
The downside of course is that it takes ages to update everyone, but you could always update as you play along in Universe and only edit people as they come up in matches.