>>24615350Not true, games in the same generation can have different mechanics. Like how Emerald included a lot of shit from RS, like Platinum added new forms to pre-existing mons in DP, etc.
That reason doesn't make sense. If it was all based on the game engine, then ORAS and XY would be the best games. One can say they are, of course, but there also factors to be taken into account, like the region itself, the characters, the difficulty, the pokedex, etc.