Samus 2 return of Metroids doesn't roll of the tongue well. It sounds dumb.Good point.
I guess I was just thinking too much into Nintendo 's line of thought. It's not super Bowser land/bros/world, king Dedede' s dream land or 'a Ganondorf to the past', so...
(Samus 2: return of the metroids kind of makes more sense to me as well, but again : that's just me)