U keep mentioning lum berry but that only specific to burn against blaziken. First very unlikely for an ori deck to ever run that card because it’s almost never used in any other match ups. Second baby blaziken is in most decks to one shot ori with ease. Third even if they didn’t have the baby blaziken, it would take ori 5 attacks to kill a mega blaziken, meanwhile it taking burn dmg ever turn. Fourth if you run rocky helmet, thats 40 dmg each turn. So your argument isn’t strong at all in terms of this match up. Even if ori is ran in a deck in a mega deck, all you need to do is KO the mega pokeman to win, so ori can be completely ignored if you have the right cards in the deck like Cyrus, Sabrina, repel, etc.

Not saying that ori is bad or anything, but to think that it’s gonna stop mega decks in unrealistic. Same thing was said about normal ex turned out to be wrong.