Does anyone else feel it is a bit silly to call anything that occurs in a fictional universe a FACT?
Oh and there are real world examples of less powerful beating more powerful opponents. I submit to you, The American Revolution. An unruly group of brigands that defeated the British Empire.
I'm sure some will claim that it was Circumstances, but in reality, it was merely tactics.
Sideous MAY be powerful. Tactics beat power almost every time. and Sideous has been shown to let his arrogance get in the way of his victories.