Well, Plugin Commands are a feature that came with MZ to make Plugins more user-friendly. However, Plugin Commands are just convenient functions, not a gameplay feature. I think this blog post describes how Plugin Commands work https://www.rpgmakerweb.com/blog/using-plugins-in-mz
So the answer is, my Plugin provides the same features for MV and MZ, but the way you call them differ. Why don't you try out my free trial first? ;)