I'm sorry man, I didn't mean it to come off so seriously--the joke occured to me straight away and I couldn't resist (I stand by it as a pretty sick burn!). I honestly couldn't disagree with you more: I think that SCVI has easily the most underwhelming stage selection in the history of the franchise, and that this is maybe the game's worst feature--and I believe fan consensus is at least with me on that first part, if not both points. Likewise, I personally think SCIV is the best looking and functioning game with regard to its staging, for the reasons discussed above and many more. But all of that said, it's clearly a very subjective call in some respects, and I wouldn't genuinely tear into somebody for an opinion like that in a way where I intended to give real offense, so please believe that the joke was meant as just that--a joke.
Edit: But just for the sake of approaching this from a more rational, objective perspective, let's do a little thought experiment. If you're open-minded with regard to it, tell me what you think are the five best stages of SCVI, and the five worst stages of Soulcalibur IV?