32 player cap is only the individual battles. The actual persistent world has an infinite number of players, hence it is an MMO.
You are wrong and misleading others. You did not distinguish between the MMO and MMORPGs.
WoT is MMO
WoP is MMO
Lineage 2 is MMORPG with open-world
Star Wars : The Old Republic is MMORPG with open-world
What the hell does MMORPG have to do with anything? There's no difference between an MMORPG and an MMOFPS other than the RPG is implied to be based on stat-driven dicethrows rather than realtime combat. And besides, it is funny how people can claim WoP is not an MMO despite being billed as such when nobody other than the devs and alpha testers know how the game really plays and those are under NDA.
Again, go check out Navy Field which is a widely known naval MMO, and then come back and prove how limited PvP battles somehow preclude the game being an MMO.