That is quite a different ballpark: the Europa is a good deal heavier, it can never be an ultralight whereas the two others can and are. The Europa also really needs the 914 turbo and its 115 hp, while the smaller machines are happy with the basic 80 hp 912.
And I think the weight limits mentioned may perhaps apply to the Europa, but they certainly apply much more to the 450 kg class!
The Europa does make a superb tourer, though. If the monowheel is beyond you, why not consider the nose-dragger variant?