>>54498545The big issue with tera and gmax is that any pokemon can use them with no restrictions. Gmax turns any pokemon into a tactical nuke for three turns with attacks that had potentially devastating effects, no item required. Tera allows any pokemon to gain an additional STAB or reinforce a current STAB and can be used defensively to temove certain weakness, no item required. Tera beam, or whatever its called, also allows any pokemon to attack with its new STAB using its preferred attacking stat.
Gmax. Any pokemon, no items. Tera any pokemon and last the entire battle, no items.
Contrast to mega evolution and z-attacks. Mega evolution was restricted to certain pokemon and required items to use. If any mega evolution was too powerful you could easily ban it or its item. Z-attacks were one time use and required an item to use.
Only certain pokemon can mega evolve and an item is required to do so. Any pokemon can z-attack but it is a one time effect and requires an item.
More than the pushed stats of new pokemon or broken items, the gimmicks are where pokemon is showing its power creep.
Ban tera for a month and see how much healthier the meta is.