All empirical evidence.
Such as?
Tournaments prove otherwise.
No they don't.
They are seeing little competitive play.
And that's why they don't.
If they were taken and being hammered every time, that might potentialy prove something (see Firespray example above). But they're not. All their absence proves is that they're not as popular as other more "reliable" or "competitive choices. Such as the Phantom and Fat Han. Speaking of whom...
Han was not, but he wasn't really competitive until C3PO.
HAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHHAHAHAHHAHAHAHAHAno.
Edited by FTS Gecko