Great Mazinger/Fridge

Fridge Brilliance

 * Tetsuya's status as an Ace Pilot can be used as an explanation for so many weird things that happened inside the series and Super Robot Wars. For example, while Great is superior to Mazinger Z, it has more variety of weapon, including the Thunder Break, making it rather impractical to mass produce, while in comparison, Z's clone has always been splitted into several parts(the Mazinger army, consist of several robots each carrying one of Z's weapon) but Great's clone is an imperfect replica with Thunder Break and Atomic Punch. The reason ? first, Kenzo is a much more superior scientist to Gennosuke, which make the creation of superior weaponry easier. Second, unlike Koji, who relies on chance, and Combat Pragmatism, Tetsuya's fighting style involves the practical usage of his own weapon(for example, the countless variation of Thunder Break). Since Tetsuya's fighting style as an expert is more simple and consistent, it makes it FAR easier to copy and analyze.
 * When he asked Kouji he took care of Shiro and tried to get along with Tetsuya... but he never mentioned Jun, who also was his adoptive daughter! Kenzo's parental skills always were arguably, but... Jun got along just fine with everyone, understood Tetsuya better than himself, and was doing a better work putting her act together than Tetsuya. So maybe he thought she would do fine and he did not need to worry about her.