Here, it is written "The
132 Speed EVs give Rhyperior the ability to comfortably outpace base 50s, such as Azumarill and Donphan, while also outrunning minimum Speed base 55s such as Omastar", while the EV spread given is 136 HP / 244 Atk /
128 Spe. Another one:
Here, it is written in Ludicolo's UU overview: "Ludicolo is often an underrated Pokémon. It does an efficient job of handling
Starmie and performs adequately against any Gyarados without
Stone Edge. It can switch with ease into all other standard Water Pokémon, in particular
Swampert, but beware of Milotic's Hypnosis. Overall, Ludicolo is a solid choice on most teams, capable of providing good support and even makes a surprisingly decent sweeper."