Goodbye Astro

[LariaKirin]

When one player uploads, every other player in the team will be counted too.
So not every AST parses were uploaded by these AST players, which mean your point 1 and 2 are invalidate and shows that FFlogs is a good indicator of the popularity for the jobs.

That's true, but it doesn't change a thing. If you suddenly introduce 100000 new parses of WHM + AST of the same party, then by your logic, the conclusion is that SCH is very unpopular. Which is flat out wrong.

Not invalidated in the slightest. No, not every AST parse is uploaded by AST players.
Also: Not every parse is uploaded and not every run of the content is parsed.

FFlogs does not provide data that will give you a good measure of popularity.