Ah. As to be expected, you've provided some good proof for your claims.
BTW, I'd imagine "Least profitable GT EVAR" as a claim kind of falls by the wayside when you take into account the fact that they released a polished development build to the public whose sales by itself, assuming Sony cleared $15 of revenue on each $40 copy sold with a $10 retailer margin and $5 or so for distribution with the rest being taken up by various other costs that would have diminished as time went on anyway (and not counting sales on PSN where they would have cleared much more than that). And assuming that revenue was applied to the estimated $80 million ongoing development costs of the game that its release was a part of in the first place, it seems safe to say that the profit on the game proper when it actually released would have been pretty healthy after the rest of the development costs were paid for; since the polished development build was marketed by Sony as (and led to the sales numbers typical of) a major PS3 exclusive when it first came out and thus would have taken care of a good portion of the costs for the actual game.
It also fails to take into account that this is the first GT game to include DLC profits as part of the bottom line, but that's a lot harder to quantify since Sony hasn't released any specific numbers in a long while.
But hey. Don't let any of those things get in the way. Clearly, by the sound reasoning you've given, GT5 was by far the full blown GT game that profited the least.