Yes! Facts. No team is unbeatable. This is why this game and FF Tactics is so good. Even the most OP team against most players can be taken out by a team specifically targeting their weakness.
it seems that pugilist's skills will work best if he act as a tank, and he can be used as a tank only with paladin sub job to get access to AP consuming taunting blade. in the end, xiza's bell is very essential for him, i guess.