I don't know why people here are saying that Polaris power is the same as telekinesis which it is not.
Magnetism is completely different from telekinesis. Magnetism only affects metals and not other objects. Magnetism can create protective force fields and negate the gravimetric force which telekinesis can't.
That's like saying Scott and Sunfire have similar powers because both have 'firepower' to destroy and burn but they work on different energies.
Whereas, Synch and Rogue's original power is the same which is to duplicate other people's powers. Rogue strength and flight were stolen from Ms Marvel aka Carol Danvers and are not her original powers.
Rogue can do much more than Synch which is to knock out an opponent by touching him/her.