User blog comment:Gcheung28/Ultimate Robot Battle Round 4/@comment-3367060-20130701231811/@comment-8105261-20130707032231

You kidding? Against Optimus Prime....you may not like him, but the fact is that while he may be less of a powerhouse of weapons and armor, he does have quite a bit of thinking power compared to all other robots.

Still, it is safe to assume that Voltron must have given him the fight of his life.