StarKiller & luke Skywalker vs Magneto

Grandmaster Luke would tip the scales here...

I think together, the two could outpower Magneto

Grandmaster wins hell yes.

Luke solos.

Lukes hand is cybernetic and metal
Lukes lightsaber is metal
 
Luke is going to die

Lukes hand is cybernetic and metal Lukes lightsaber is metal  Luke is going to die

Lukes hand is cybernetic and metal Lukes lightsaber is metal  Luke is going to die

Star Killer can forcefully pull down a Star Destroyer. I can imagine a Star Destroyer weighs over 10,000,000 tons. If the engines used to keep Star Destroyers up have the force to levitate and maneuver around something of that weight and Star Killer able to fight the power of that engine's force, then Star Killer is strong enough to force a suspended 10,000,000 ton object down. 
 
I can imagine Luke is somewhat stronger so I will at least double 10,000,000x2...... But he has cybornetic implants. 
 
 
Magneto has easily lifted a island the size of Manhattan with it's own mountain range and he was at a weakened state. He was going to crush the entire city with the island then throw it into the ocean. A chunk of a continent with a mountain range and a forest of redwood trees can weigh well over 100,000,000,000,000 tons!!  
 
 

Star Killer can forcefully pull down a Star Destroyer. I can imagine a Star Destroyer weighs over 10,000,000 tons. If the engines used to keep Star Destroyers up have the force to levitate and maneuver around something of that weight and Star Killer able to fight the power of that engine's force, then Star Killer is strong enough to force a suspended 10,000,000 ton object down.

I know a stomp when I see one....and quite frankly.....THIS IS ONE.

Telekinesis and Magnokinesis are 2 different things...Even Grandmaster Luke probably wouldn't be able to stop Magneto from either taking his Lightsaber or his cybernetic hand. Magneto could just shoot Luke's own hand into his chest and kill him. Starkiller is a little harder since he doesn't have any implants (that we know of) so he could dodge his own saber and try using the force to take down magneto. I'd still give it to Magneto since he'd probably turn the entire battlefield into a weapon