Tudjman wasn't Ustasha. He just kissed their asses and was pretty much just another idiot politician.
How was he an idiot? He managed to create an independent state after almost 900 years of not having one, against the odds? That certainly isn't idiotic. The idiots were the ones who ran the RSK parastate who managed to screw up so badly that they lost everything after being promised by everyone that they'd get almost everything if they just toned it down a bit.