Are they as good as my Swedish Hasselblad 503cw with Danish Phaseone p45 back and German-made Zeiss Glass?

And also my 35mm Leica MP and Summilux-M 50mm f/1.4 ASPH Lens?

The Summilux-M 50mm f/1.4 ASPH is considered the best 50mm lens by the way.
Is a Nikon any better than a Lomo?

They’re not designed to be as good as a Hasselblad. Canon, Nikon and so on are in the consumer camera business not the very high level pro side.

Although they do make cameras that many pros use, Hasselblad, as I think you already know, is a camera designed for the very high level pro who can then charge very large prices for their work.