Stunlocking works against me yet i cant stun anyone as chewie or palpatine

Seen this. Same as getting stuck in place by repeated lightsaber blows, I can't roll, do any abilities, nothing... Just end up getting annihilated. But when I do repeated Saber strikes on most everyone, they just roll away as run off.... It's not hard to spam saver strikes... So why doesn't the game not let them roll or use abilities either? Same with stunning. Or even other abilities... I use it, seems to do nothing to the anymore like it failed for some reason and they keep coming at me.