Well, the poster seems to be calling the two sounds "unusable" because they don't like the sound. That is a personal, subjective thing. The two treble settings aren't "unusable" in a true sense. There's another thread active right now about the Victoria Poeta with some commentary about how its characteristic dark, soft, refined voice personality suits some but not others. I don't think it's in doubt that the VP is anything but an exquisite premium instrument. It's just that its characteristic sound isn't a match for every player. Those Americanas have sold very well, and I suspect some might be delighted with their sound.
I would be curious to know which factory is doing them for Petosa. I don't believe it's Bugari/ZS.