oh no, don't get it confused... (delta)rank plays too much of a roll
I was saying thats because it is possible that your rank (or DRank) caps the delta(str-vit) and also the delta(Att-DEF) which would also explain why the attributes dont seem to work as much... especially in the higher levels...
And in that capacity it seems to indirectly affect the damage... I AGREE THAT dRank MATTERS WAY TOO MUCH
and I have never argued that it doesn't. I am just hypothesizing at it's actual place in the formula
If it is a direct damage modifier or just modifies the other stats that contribute to damage....
Which again WOULD EXPLAIN WHY ATTRIBUTES SEEM TO NOT MATTER as the Delta(Attribute) numbers are capped