Will they stick with the same triangle of counter-play? Right now, Hardcore wins against Know How, Know How wins against Charm and Charm wins against Hardcore. Will this still be present? If this is the case, I see why the abilitys are given out like you said here. I think it would make a little bit more sense from a "lore" stand point if it was different.
Hardcores should like it when they are receiving pain, in battle, or when with the Hero. The logo of Hardcore is a wipe, so shouldn't they be able to take the ability to block/tank damage?
The Know Hows should know where to give pleasure and with great timing. With this knowledge they are able to hit the enemy where it hurts. The logo of Know How is an arrow going for a bulls eye, something like what critical hits are. Know Hows, by this logic should get a the bonus for crit.
Charms are selfish and want to have more pleasure when it comes to loving. They should be feeding/healing off of the enemy in a battle, allowing them to stay for longer. Charm's logo is just a rose and I really can't go off of anything there. Seeing as the other two abilitys, makes sense for me at least, to give to the others. Charm would be the one left with the healing ability.