I don't think he's supposed to be weakest or anything like in the other show. He's just a transfer student (with a flawed common sense) who immediately kicked ass.
It's alright for me that the fight was poorly animated and executed in this episode because honestly a fight against a hundred (or 2^7+1) mindless dolls is going to suck in any case. Better save the effort and budget for proper fights against capable human opponents. It was still funny he was able to pull it off carrying Julis, as he clearly just didn't want to let go of the pretty girl he fell for.
Like Shinta, I like Julis a lot. I also appreaciate how directly the MC dude simply told her that he's going to make protecting and supporting her his goal. It sounds kind of phony or stupid in a white knightish manner under most circumstances, but the situation was permitting and he did have the correct mindset and honesty to pull it off. Although it still might have been more straightforward to just go ahead and confess his love to her, as everything else then would follow naturally.