True but it quite literally states in the
manual
And when you look at all the variant specs side by side the phoenix either matches or exceeds the other variants.
That is why I am saying even if specs are not final, the "intent" seems pretty firm that it is meant to be the top of its line in every aspect. So not just the Lynx rover or the P-72 seems to be the differentiating factor but a combination of all premium parts. The phoenix is unique in this regard because almost all other lines have clearly defined and different roles for their variants. The ship that is the closest may be the Aurora LX, but even that is a stretch because you can say it has one higher class hard point than the others. Also to note, the ship that comes closest cost wise is the Aquila and it also has a rover and snub.
edit: but meh, this could just be me overstating importance of phoenix simply because it is shiny. The more I think about it. Not sure if I would miss it when I already have Aquilla.