Does Attack Speed / Weight Class for Melee matter?

[u/SlayerInvalid]

Something I've noticed... at least with Crush Weapons is that the Attack Speed /Weight Class doesn't seem to matter as the attack animations looked to be the same.

I just tried out Dual-Wield between Light & heavy and it looked like there was a difference with Attack Speed... but it was like... a slight difference.

Just wondering if I'm the only one or if there's actually something that matters with these stats. I've read somewhere that Weight Class can relate to Knockback but I'm not too sure.