You could always check the leaderboards to see how many have actually beaten it this patch on your platform/server. But there's going to likely be a lot of teams that can that haven't yet as they try to progress through vHOF.

Morrowind dropped a lot of players DPS by a bit but not enough to stop most guilds from completing if they could already do it. The exception is if your group was BARELY clearing before.

I'd argue that most of the problems within vMoL really comes down to how well individual players handle the mechanics. I'll assume your group has figured out how to not murder each other with color swaps, but do you have Dks... or maybe wardens doing a good job chaining the adds around? How quickly do you bash the beaming adds? Deaths and adds are the two biggest problems on the twins. If someone is not doing their job well, you need to let them know.