Thundurus really needs an ORAS update, his current analysis is a bit outdated.
Hippodown must have a SpD set somewhere. He checks/counters a so large portion of the meta : Special Mega Altaria (with Toxic), Mega Diancie, Gengar, Offensive Heatran, Lati@s, Thundurus, Tornadus-T, Mega Alakazam, LO...