Then you're reading the wrong posts. The Wobb user doesn't need telepathic prediction to figure out that the Forretress that just switched in against my un-boosted physical attacker is probably going to lay some rocks on the turn it assumes it has free. I don't need to predict that if something on my team is already asleep, Gengar is going to try Shadow Balling me. The best part is, if you bring Wobbuffet in against the right things, even if you get the prediction wrong (say Gengar uses Thunderbolt instead of Shadow Ball to stop your free Smeargle switch-in), you still kill the opponent (Thunderbolt wont be hurting Wobb much and he can just bounce it back with Mirror Coat).
What makes you think that a good player isn't just luring in Wobbuffet with the Forretress? The opponent can predict too y'know.
Your Gengar example is flawed. You DO need prediction to get rid of the Gengar against Wobbuffet, because if you're trying to Mirror Coat a Shadow Ball because you're assuming that, what are you going to do if it's one of those Subbing Gengars? Gengar can just get behind a sub and 2HKO with Shadow Ball, either forcing Wobbuffet to switch, or killing him. Not all Gengars are Choiced...
You can't just say that you can get the prediction wrong with Wobbuffet, because it's honestly not true. It can't just sit there all day sucking up attacks like Cresselia. There's a lot of crap that can 2HKO him if he comes in on the wrong thing.
It isn't a matter of Wobb needing superhuman prediction; Make an informed guess, and if you're right, you set up your sweep. If you're wrong, you kill something anyway. Its a no-lose situation for the Wobb user.
This makes no sense. It's not a no-lose situation for the Wobb-user. How do you kill something anyway if you're wrong? If you accidentally Mirror Coat a physical attack, you're the only one that took damage, because you predicted wrong, and you DIDN'T kill anything, so your point doesn't sound right. An "informed guess" is a prediction, just so you know.
In other words, it's a win-lose situation for the Wobb-user. Not different than any other pokemon.
A smart Wobb user is never bringing him in against a Breloom unless something else on the team is already asleep. =\
Well, whatever. My point is that Encore is NOT foolproof. You can always end up Encoring a very painful attack, or a status that your team hates.
Also, that Wobbuffet is an incredibly slow Encore user, so therefore it can be put to sleep before it can do anything. Whether that be by Breloom or anything else with a sleeping move. Then there's also the fact if the opponent Encores one of Wobbuffet's moves that isn't Encore, he's forced to switch out too.