LOL. Fritz and FW have always reminded me of Alexander and Philip II. in this regard. In both cases, people didn't doubt who the genius was in that Father/son combo, but also in both cases, it couldn't be denied that the genius son would not have been able to accomplish what he did if not for what the merely talented father had managed to create first, and that irked the the sons long beyond the fathers' deaths. (Especially since in both cases, personal relationships had been catastrophic.) (Seriously though, both the Macedons and the Prussians pre Philip and FW respectively would not have provided a basis for becoming a superpower, and while undoubtedly the sons would have accomplished military success anyway, it would not have been possible to that extent.)