Oh you dont need to be good to clear stuff. I met a dragoon raidlead of a friend T12 static to say it short: ate every circle blade in T7 every single AOE in shiva EX.
Skill seems to be barely needed (thinking also bout healers going: "why should we stoneskin/adlo tank for ravens we are OP?" in turn 9 and getting their T9 kill before me). All you need is determination and people with the same level of that. Sure DPS output is also needed but question is to which prize? Is it worth taking unneeded damage and stress healers? My judgement if someone is good or not goes beyond pure DPS. Dodging and thinking ahead are an important point for me and I didnt make it past turn 9 yet ^^