Board Thread:General Discussion/@comment-26934487-20190623161059/@comment-26934487-20190815223544

I think the reason why they went with Metal Sonic is that the fight would likely come down to Metal Sonic vs the Wily army (of which, by their research, Metal Sonic would win) but that he would not be able to resist roboenza which would make him turn on Eggman (which he has done even without roboenza).