>>23553741>>23553907You had twelve straight years of Groudon being Kyogre's bitch, and any time anyone tried to complain about it they'd get a big, fat helping of "Water covers 70% of the Earth therefore sea > land" with a generous side of "get bent". Primal Groudon is the omega, and represents an immediate and terminal threat to ALL life on Pokearth. Desolate Land does a damn good job of representing that because without water, everything dies. It's also a logical upgrade to Drought, which halves the power of Water-type moves.
Meanwhile, making Primordial Sea affect Ground-type moves makes no sense whatsoever. Underwater Earthquakes happen all the time and can cause plenty of destruction. Just ask Japan.
Besides, most cover pairs are unbalanced.
>Charizard vs Venusaur>Blastoise vs Charizard>Diving Pokemon, lord of the oceans vs a firebird>Palkia is weak to Dragon, Dialga is neutral to it and resists Water>the dismal icepit of Black Kyurem>lol X and Y 
