Jedi Temple Guards vs Magna Guards vs Emperor's Shadow Guard

Who would win in this three way battle?

Shadow Guard?

Royal Guards + Lightsaber Staffs + Lightning + Badass outfit = Shadow Guard

A Shadow Guard gave Starkiller a good fight.

That is an epic picture there.

I'm going with the Shadow Guards

Shadow Guards, definitely. As mentioned, one of them gave Galen a decent fight.

...Although I would've really liked to see what the Temple Guards were capable of(they ended up being relatively featless.) Even some of the most elite Jedi backed down from them.

I would bet my nut the Temple Guards take this. Via feats the Shadow Guards do though.