Pfff overconfidence is a weakness for sure. It causes people to underestimate you and make mistakes its allways been like that in gaming and real warfare. Everyone thinks that just because they got the best armor or their guys are the best trained, they are the best qand will win. This is of course a load of BS. Who defeated the mighty roman empire? a bunch of screaming half naked guys. Who defeated the nazi war machine on the eastern front? A bunch of conscripts. The point is that tactics will allways win chances are he will just try to bum rush you and brets are going to be much faster so just hold up his guys with peasants then come from behind.