...You know, I always assumed the blades were counter-rotating for exactly this reason, but actually looking at the model, the teeth are clearly oriented in the same direction on both sides. I guess that wouldn't be a simple fix, if Djura was already pushing the limits on mechanical complexity and weight. It is an engine the user is expected to swing around on the end of a pole for a while and bash into things, it's amazing it works as well as it does.
/overthinkingthejoke
Edit:Actually, when you think about it, Simon ought to be just about the worst possible opponent for Brador. His M.O. is to immediately power up the Bloodletter and then chug a Lead Elixer for the superarmor, but the downside of that stuff is that it slows you down- it makes him really vulnerable to ranged damage, like the cannon or gatling, or Simon's Bowblade. Brador pretty much has to have taken Simon by surprise and gotten a first hit in at close range. You'll note that Simon managed to drag himself into cover while severely wounded, and invader-Brador is nowhere to be found, meaning Simon still actually won that fight.