So far, these turns are generally based off of "do you know your class" rather then just skill or gear. Gearing/Skill is already a factor with T10 (decently strict soft enrage) and gearing more so for T11. However, for those that are able to pull ridiculous numbers in their respective classes, there are no such things as gear checks. With crafted piecies you can beat HP checks. So at this point, any group with time and gear can down these turns granted you got skill. These turns will not be downed by several people who even beat T9.