You're wasting your time. The 'raise greensteel ML' argument never had any merit or meaning to begin with, and the fact he's only sticking to it because he tried to speculate WoP value and failed, so he wants everything else nerfed too makes it even less valid.
He's not even pretending he has a point anymore, he's making out as if greensteel is '285% better' or something.
Unless he found a secret recipe that makes you do over 1k DPS with a greensteel weapon this claim is of course laughable.