Hehe, that's silly! ^__^ But I was referring to their personalities in the DiC show, not the Nelvana one. I'm not sure how similar they are.
Anyway, Kazuma's personality really is similar. The way he talks when he's helping someone with their personal problems or their feelings is just like a Care Bear would when they help. Despite being a known Yakuza member, he's very sweet, caring, and sensitive. He wants everyone to get along and be friends with each other instead of fighting. When he does get into fights, it's only his version of the Care Bear Stare. Also, before the final boss battle in Yakuza 3, [spoiler:2diy6exf]he and the final boss have a nice discussion about their feelings and what true friendship is all about.[/spoiler:2diy6exf]
So yeah... he's the Yakuza's version of a Care Bear. ^__^