User blog comment:Gcheung28/Ultimate Robot Battle Round 4/@comment-3367060-20130701231811/@comment-8105261-20130707072041

Well, for one thing, of course it wouldn't trigger meltdown. You think Optimus is the type to carry a weapon that's particularly desctructive? Plus, nobody would build a robot with a weapon that could potentially harm the victim as well

Anyway, unfortunately most of the Autobots are quite weak, except for the Dinobots, Omega Supreme, and Metroplex, all of whom are still alive, so Optimus mostly relies on the strength of the previous Primes, which is "The Wisdom of the Ages". The Matrix of Leadership has also been used to cure the feeling of hatred in people, so that may be a win by technicality.