Once again, the very topic of the thread is concerning the state of class balance and to offer suggestions to the developers to address that. Not any other irrelevant hypothetical factors such as differences in gear or differences in mistakes. The moment those other factors are brought in, there becomes too many variables to make any accurate comparisons with. But I'm pretty sure you know this, and you knew exactly what you were doing by bringing those up.

And in the grand scheme of the class balance, and once again with every other factor remaining the same (otherwise direct comparisons cannot be made), we cannot absolutely say that skill level is the only major factor in clear rates anymore. Especially now that the topic concerns half of the DPS classes, rather than issues with two or three classes split across different roles as they were in the past.