I GOT HANDS
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It's not really debatable, if you are going anywhere close to 5/5 with a Sub Zero opponent, it's because your opponent is much better than you. We are talking about putting a mid tier character against a top tier one, who by design is an excellent counter to the character. You CAN debate it if you have logic that supports otherwise, but there's a reason EVO commentators described Raiden as one of Sub-Zeros hardest match ups multiple times, and just calling it "debatable" does not make it so, I think it's much more likely you are just playing against Ice Clone wrong.I'm not arguing the main point that Predator is a better SZ. He may very well be.
But the option of EX slide on wakeup is not a "bit better". This is a game where 1 superman will most likely be the end of the round for a character like Predator. That is a big deal. So if Raiden beats SZ 7-3 or whatever, (which is debatable IMO, I think the match is closer to 5.5-4.5), if you think you are just gonna switch to Predator and magically overcome this matchup you're crazy. Predator loses to Raiden a lot worse than SZ does specifically because of the massive difference in their wakeup options.
EX slide is a real wakeup, it's something that must be respected. Predator's Scimitar Slam is an absolute joke and I don't have to respect it at all, it might as well not even exist when I have him in the corner.
But regardless, your logic doesn't really do much to prove the point you are making. Predator loses in a match up that is already 7-3 against Sub? That's not a weakness to Predator in comparison to Sub then, they both lose the same match up, let's look at what they do differently. That being said, I think I prefer Predator against Raiden, I'll take my chances with the lack of wake up, in return for actual strengths in this match up elsewhere, as opposed to playing a character against another character who can basically do everything I can do against him but better, and much more, and has the kit to practically invalidate Clone, the one tool that makes up for what Sub does worse in other match ups unfortunately does not work well at all against him.