Equatable, no, but if you refer to powerhouse creatures, there are a TON.
Eldrazi like he said; Emrakul, Aeons Torn, Ulamog the infinite gyre, etc.
Planeswalkers are basically players/creatures you can play. They have neither attack power nor defense, but they have abilities that gain and lose them points. The "final" ability usually takes a few turns to build up to, but are usually ridiculous (killing your opponent in one turn for instance, or restarting the game). Look up Nicol Bolas, Planeswalker, and Karn Liberated for those best examples.
Slightly less dramatic examples are legendary creatures. Not as powerful, but always helpful. Avacyn, for example, is a literally indestructible angel. Krenko lets you double the count of goblins you have on the field every time he taps (about once a turn, which means if you had just him and he tapped, you'd gain a goblin "token" [same thing as a creature]. Next turn you'd get another two, then the next turn 4 more, then 8 more, 16 more, 32 more, etc. And usually you have more than just him to start with).