I guess for me the difference was probably not so much about NPOV and SPOV but rather between the Brockhaus in one volume and in 30 volumes. And I think there's another important issue: I must admit that I feel somewhat reluctant to delete another article and to replace it with my one. Although I may be an expert in a field, how can I be sure that I'm going to write a better (easier to read and understand, more accurate,...) article on a topic than somebody else?
I think this is what is at the heart of my previous suggestion: Allow multiple entries and let readers judge what constitutes a good article.
Best, Troas