The Transformers Cyberverse Battle Builder (or to render it the way the web page does, TRANSFORMERS CYBERVERSE Battle Builder Game) is a thing where you set up some extremely toy-accurate Transformers, and then watch them shoot each other to death.
This is hilarious and fun.
I don't really have much more to say about it beyond a little research I did, that being into the subject of how strong the individual Transformers are relative to each other.
Number of Decepticons Necessary to Kill Five Optimus Primes: 6 Megatrons/Starscreams/Megatron Battle Stations, 11 Crowbars, 13 Crankcases, or 16 Barricades.
Number of Autobots Necessary to Kill Five Megatrons: 5 Optimus Primes/Sentinel Primes (although it's narrower with Sentinel Primes), 7 Ironhides, 8 Bumblebees, 10 Sideswipes/Ratchets. (I didn't do as comprehensive a list of the Autobots because there's a lot more Autobots to choose from, and there's only so much time in the day.)
Obviously this doesn't reflect their strength levels in fiction, other than Optimus, of course. Because Optimus is always the strongest.