Norse Gods were nicer Gods. Greek Gods were more like humans.
This is why I loved watching Stargate. Goa'uld when they took human hosts modeled themselves after our various gods. Or at least on the show they were the inspiration for them. 😀 On Stargate the Asgaard were aliens that modeled themselves after the Norse gods to protect humans rather than enslave them like the Goa'uld. 😀
To me the Greek Gods were more relatable with humans, dealing with very human emotions and problems. Affairs, sibling rivalries, love triangles, etc. 😀