dude,l have to dis-agree, SIN can by far demolish a planet, as you saw, in one of the last few FMV's SIN used that huge Graviton thing, which mis-placed the whole system of evaporation, hence creating a hurricane, and that huge ass lava explosion thing, the only reason this wasn't bigger was because SIN was Jecht (if you played the game you'll know). But adversly, if Tidus, and friends didn't defeat Seymour Omnis (inside of SIN) then Seymour would do the gravioton, but that whole explosion, would reach EVERYWHERE, EVERY CONTINENT, UNDER EVERY ROCK, EVEN GRANDMAS HOUSE, but this time SINS not gonna blow down the 3 little piggies house, hes gunna freakin vaporize the porkers