Hey, that was my pup!
I admit AA MR is a little difficult to handle. But I found that with fighting AA EV and/or AA GK pup works very well on VD difficulty. When I get home I'll check and make sure that's the same attachment setup I found works best,
Also, one thing I've been testing out is "locking" my puppet -dt gear using alt+d but setting the mode to TP mode. Then when the puppet is around 900 TP I "unlock" -dt gear to let the gearswap use the WS gear.
I also have another set I've been playing with, the -dt set with Taeon. Its slower to build tp than herc with +store TP and the puppet hp regen is slower than Ryu. equips, but it is less risky than letting your pup swap into full WS equip (since I put the Taeon set in my puppet accuracy spot)
Not all pups have the best gear, not all players have friends to call on when they have time to farm. That's why I posted the video