No, actually, quite the opposite. Khan's likely to draw the attention of the two Sith on the battlefield with his rapid disruptor fire, and while Khan isn't a droid, Jedi/Sith have reflexes fast enough to deflect rapid file blasters (shown in all 3 prequel films when they encounter the Destroyer droids of the separatists). Plus Selene and Blade both also have automatic weapons (bullets, not blasters, and you can't set bullets to stun) and greater durability and reflexes. I think Khan might be an early casualty given the combatants on the field and this being a free for all. Spock as well.