DoomTheGyarados posted...
I bet a lot less people played Platinum is probably why, if I had to hazard a guess.
That and the third versions are just less memorable to people, since it's just the same game over again, even if improved/better. People are more likely to fondly remember the first time they played the games, which is why, when split up, Red and Blue do better than Yellow, Gold and Silver do better than Crystal, etc.
Notice Gold/Silver made it but not Crystal, Ruby/Sapphire but not Emerald, etc. Platinum's the only third version that did.