Yeah that is right I think.
I’m in a similar situation OP. Except I didn’t buy my Bloodrazor, a good friend who was ahead of me in levels got it as a drop and gave to me. So I am currently using the same setup as you, Bloorazor MH Thrash OH. Atm they’re the best two swords I have, by a mile, it’d be silly to not use them even if having thrash in OH isn’t completely optimal. Once i get a fast OH with comparable DPS I plan to do some testing and see if it’d be worth swapping out Thrash for MH, I’m really not sure. The bloodrazor does more raw damage, meaning SS and riposte will consistently hit harder with Bloodrazor, but the proc on Thrash could out-weight that I would think, just depends on how much it procs.
For the record, the dot hasn’t been an issue at all for the past 7 levels I’ve used it. In all honesty it just doesn’t proc enough for it to be a problem, in my experiences anyway. When pulling quest mobs it will proc on every 3rd or 4th mob, something like that, so unless it just happens to proc on a mob where I overpulled or got a bunch of unlucky misses and need to gouge/blind+bandage then it just doesn’t matter. That hasn’t happened yet to me, perhaps I’ve just gotten lucky idk, haven’t had a single issue with the bleed proc tho.