The DPS requirement in 25 man is easy - in heroic gear dps should be easily doing 12k+ in a 10 man (with a few raid epics I saw Zaev and Zerne hitting 17k the other night), in a 25 man it will be even higher still.
Assuming 18 dps, the minimum requirement is 11,950 dps per person. Only problem is the dispelling - you get 8 debuffs on 25 man instead of three, so perhaps bringing two healing priests for mass dispel, and splitting them between the groups, would be beneficial.
I am still not sure how worth it this would be though, given that we are not gearing up a 25 man raid team. Team Epic simply kill him on 10 man at some point during one of their weekly raids. He drops two pieces of loot on 10 man, and 6 pieces of 25 man. So TECHNICALLY, the loot per person ration is slightly higher - three times more loot, only 2.5 times more people in the raid, but it's so marginal that I don't really see any point given how much trickier it would be to get 25 people on with 18 of them being good enough to meet the DPS check. It is fine for a proper 25 man raid, but given how random TB is, with us not having any idea really when we will have it, I just don't think the reward is worth the effort required.
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