1. I could care less about hints. I'm talking about things that make characters prime candidates. Ghirahim doesn't have any major flaws, but there's nothing overly appealing about him, either. Rosalina, for example, brought a new playstyle, which beat out Bowser Jr., Toad, and Paper Mario, all but the latter being mostly well-rounded.
2. Now you've lost me. I'm near certain that every character has been considered in some form or another, and Ghirahim would be no exception.
3. Those sources seem a bit vague to me, but they're still helpful in proving your point. The only thing that concerns me, as pointed out in the comments section, is the lack of a digital sales count. Those could be crucial, or, more likely, they could not be. Another thing, though, is that it only followed portable games. It's no shocker than PH and ST did better than it's successors because the 3DS alone did pretty badly until last year's boost. Even then, though, I doubt it comes close to comparing to the DS. Seeing the charts for the US would make me more comfortable with these sources, and also charts for the console games as a whole. Also, Tingle's "hatred" has yet to be confirmed. Ultimately, it can't be proven one way or the other, so we should stop debating him and agree to disagree.
4. You just contradicted yourself. He doesn't care about which series deserves reps, but you insist on giving characters to series that don't need any more because they're larger than the others.