Sorry that dirty lie has been out to rest thanks to bdo oddly enough. We have years of data now where one person one taps with no failstacks and the next person failing hundreds of times with good fail stacks often pushing cumulative permutations of 1 in a million change of such bad luck. Don't bring up law of large numbers either as that takes tens of thousands of samples to even out not 50-500 matches. Sorry the myth of the rng equals out for all of us has been busted bigly.

I have no idea what this even means but going with a wild assumption, just because there is ONE high-ranking Mystic out of thousands out there doesn't make her any strong. Mystic is severely underperforming compared to top dogs, there are barerly any Mystics in Top 100 despite her popularity. This goes double for Sorc which everyone hates fighting against, but just last week there were literally only 3 of them in the entire TOP 100.

Your average assumption doesnt take into consideration the skill needed to perform well with the classes, and I am not talking about skill ceiling per class here.

This may be true for NA, but for example in EU, we had upwards of 10 mystics in the top 100 for the last 5+ days. KR and SA also have 5-8 Mystics each for a majority of the time I have the data for. 

NA is known to favour rat classes more, which may impact mystic performance. However, the class definitely is strong on its own and can perform very well in AoS.