>>88007834That's just not true.
It does matter if you're bigger, because the bigger you get the more energy you have to consume to move. Your stamina drains faster, it takes longer to pull your arms back, you can't react to attacks as quickly. There's just absolutely no way to move something that's significantly heavier than a rapier in a way that is as precise, because even if you do manage to move it just as fast because of your raw power, you won't be able to stop it as fast.
I'm not saying strong fighters aren't as good as dexterous ones, but there's clearly a disadvantage in speed that is impossible to overcome.
You can compensate for the lack of speed, but you can never be as fast as someone who's more lean, using smaller weapons, it just physically doesn't work out.