"Top perk is given according to your experience in topping opponents."
And I think Hiro should only actually get Top points if he actually manages to be a top and that Top Score should only be required to access scenes where Hiro's actually a top. We're not disagreeing here, I'm just saying that the scenes accessed via Top Score rarely seem to correlate with actually being a top.
Easy example: he's still Urka's bottom bitch even when not being penetrated. I'd say he failed at being a top, and failing at being a top despite having the Top Score required to even go for the attempt is exactly what makes it feel useless, as was my original comment. Hope this more clearly illustrates where I'm coming from.