>>38318643thing is, Stealth rocks has clear counters that work across multiple pokemon. send in a pokemon that resists rock type moves and use defog/Haze/Rapid spin and viola, the rocks are gone.
On the other hand, Volcorona and Mega-Charizard Y are incredibly dominant pokemon that have very specific counter play on switch in, that being a pokemon thats both immune, or not easily phased by, fire type moves and in the case of Charizard Y/Sunny day volcorona can also withstand solar beam, and are armed with a rock type move, which is an incredibly select few pokemon.
alternatively you could just have stealth rocks, because it guarantees that as long as the pokemon switching in can out speed them, or withstand one hit from said pokemon, they can usually win the trade
