As I said, it depends entirely on how much faith and stock you want to put into the events of AvX. Thor resists two Phoenix Force empowered psychics and gets dropped with everyone else to Xavier...barring Spider-Woman and her SHIELD implants.
Generally, Thor's mental resistances vary from being decent to being exceptionally high. With CIS off, if Thor and co. aren't instantly felled telepathically, that team is phucked.
Even if you want to ignore the AvX showing, BRB is still fxxed since before AvX he failed against mental assault MULTIPLE times in the same side story. Thunderstrike is likewise fuxked because he's not an Asgardian and his mind is still mortal.
So it's Thor vs Three Elite telepaths, one of which has respectable telekinetic abilities.
Team Telepath wins.
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..even the outer hells are indifferent matters for they bow only to potent and archaic Nodens.
Jean's "respectable" TK sans Phoenix Force isn't going to help a planetary scale storm or instant BFR or a hammer toss thrown at anything close to Thor's top speeds or the countless other things that Thor uninhibited by CIS could and has done on panel.
If Thor's not shut down instantly, Team Telepath is going to be in a world of pain due to them - aside from Emma - being squishy humans.
You realize, if Jean is serious, being a squishy human, means nothing to her. Back in the 90s, she died, killed by a Sentinel and right before she bit the bullet, she transfered her mind into Emma Frost's body........against Emma's will.
If she's desperate enough, Thunderstrike's or BRB's body is about to have a new owner.
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..even the outer hells are indifferent matters for they bow only to potent and archaic Nodens.
Body swapping would be nice for Jean in that it gives her more time to live and the like. Jumping into Eric or Bill's body would just prolong Thor beating the shit out of her.
They would have to mind whammy Bill and Eric and "turn" them before Thor drops a thunderbolt on them or throws Mjolnir at supersonic+ speeds (which is a low estimate on how fast he can throw it, tbh).
I have to go with Team Telepath you have three of the most powerful Telepaths on the planet working together, you can't tell me Thor Corps just shrugs that off. Jean should be able to provide slight protection while they dissect Thor Corps minds.