This discussion is strange, because it's like comparing a car with all the accesorries and another car with less accesories but a nice paintjob.
ROW / PE is the full package, all textures are new:
Docks, cranes, grass, seabed, rock, sky and water, underwater colours, reflections,free moving camera, clouds etc etc.
EE 4 is only the environments, sky and water reflections, underwater colours and some very nice water effects.
So actually you can have both! Install PE 2 and if you like EE4's environment better, just apply the EE4 mod on top of PE 2, then you have it all
I have been PM'ing Wclear about an idea I had, if we could make our mods in small portions, one for clouds, one for water colours etc. then the users could choose what they like, f.ex. Wclears water colours, PE2's clouds and so on :hmm: