To be completely honest, I don't see Plups results at CEO as much of an indicator for anything besides the clear fact that he has potential which should never have been in question imo. This is especially because Leffen took the tournament quite convincingly over Armada, 3-0d Shroomed, and according to bracket also beat Plup preceding that. The people are basing most of the praise on is Plup v. Mango which honestly doesn't mean much to me as a one-off seeing as Mango also got 2-0d in winners bracket by Shroomed who was later 3-0d by Leffen. I'm just saying, thus far such predictions are pretty much only being thrown around because the believed G.O.A.T. was going out like a buster left and right again. The thing is that all of it ignores that the other two big Fox mains in residence did just fine overall until they finally went against each other. Not to mention that even at this point, both Fox and Shiek players have a long way to go in reaching their respective pinnacles. Shiek is a ton better in theory than I've seen done in tournament in regards to those tech chases. The same goes for Fox.
Really, I don't think threads like this are really a good idea at all because of how quickly things change and how much the player element and everything that comes with that effects the game. Basically, a Sheik vs a Fox isn't the same thing as Sheik beating Fox in general or even any other Sheik beating any other Fox in specific instances.