It's not having slightly higher average intelligence that makes you a nazi, but rather thinking that this makes your race "the best"- or that actually there can be something like "the best race".
No, why? Apart from the not very plausible explanation with selection pressures in the middle ages, Jewish intelligence is pretty obvious if you look at the data- just as obvious as it's Jewish economic and media power, Jewish influence in Western politics, Jewish contributions to arts and literature, and so on. It really couldn't be more obvious. I think we need to recognise it and find ways to deal with it, from both sides.