this is the reason why i said you'll need at least some debuffing....
unless you're doing some absurd damage (like 50k+ per hit normally), you'll likely need some atk downs...
and if you are doing that much damage, then soloing shouldn't be an issue for you (i doubt guild order would be an issue for you...)
but for players like me that do 30k or less per hit with buffs and debuffs factored in, then yeah, we could have an issue with getting the right amount of debuffing, especially when you can't control others in a raid and there can be a lot of people in one....