I recently hit level 140 on BT and i can solo DIPQ just as fast if not faster then bear. I'm wearing a clean frozen set with a 70% spell traced revolution scepter. Advanced thunder dash + 3 point pounce 1 shots everything but the hounds and the bosses. So leopard CAN be used for DIPQ if you really enjoy the animal.c:
i am not claiming leopard is a better bosser or dps. I am claiming leopard is not 'completely obsolete after 140 or earlier'.
Heck you can choose to not use thunder dash and just use 3point pounce in place and it'll work. But if you don't want to move why would you use leopard in the first place?
Leopard is better in DIPQ if you have your link skills + slight funding (a 70% spell traced weapon is enough) and bear is better with no funding at all (just the event equips). Bear is better for parties in SDH due to the lack of movement and leopard is better when soloing the map ( funded ). Simple as that. Leopard is a viable path contrary to what everyone bandwagons so dont be afraid to pick it up if you like the playstyle.
Leopard + cat = 2 kitties.