Well, he's a better singer than Naoya Ogawa (who sang in some bizarre HUSTLE music video...), but isn't Kawada a heel in HUSTLE now? It seems kind of weird for a heel to sing like that. Or was this back while he was still a face?
I believe the logic is fuzzy...Sable and Chyna never boosted ratings with their Playboy spreads, because they were a midcard attraction. Same with Torrie. People aren't watching the show solely for them, they're just a side-attraction.