battle of the broken ass robots Gauntlet style Epistemus Solomus The Last Autobot Micronus Prime Onyx Prime Alchemist Prime Solus The Fallen Logos Prime Liege Maximo Vector Prime Nexus Prime Prima (with Star Saber) If he beats them all he faces them all at once Battle takes place in...
www.fanverse.org
with the possible exception of Prima, what I saw of the Numidium in that thread, should win.
Well vaguely you could highball The Fallen near to their tier but that's kind of extremely speculative