>>37498851Zygarde was suspected because of his new "glare+sub" set. The suspect test didn't come out of nowhere like you want us to believe. That set forced people to play 2 pokemon in order to not get destroyed by zygarde, Tangrowth and full def megascizor with curse.
And even then, these mons could still lose if the RNG was slightly in favor of Zygarde.
The set leaves Zygarde with only one attacking move but it's a non-issue when that move is "thousand arrows".
The ban was completely justified, the only con is that it made heatran more popular.