Guys that's not the same. FTG level one and two are distinguished in the manga so there isn't an argument there. Rai on the other hand does not distinguish the output on the armor, even though we have seen him "tune it up" a bit, there are no distingiushing characteristics from the original armour thus it can't be called version two. The point is KYF names them according to the output Rai put into it in order for us to get a clear idea of how dense(is that the right word for this case?) his armour is. I see no prob with that he's just making it easier to understand, this is really an argument from nonsense, just let him call it what he wants, it's easy to understand that way.