Note: This site is not up to date right now! The site needs an update to handle the different forms of Pokémon. But unfortunately I have currently no time for that. Until then, please use our spreadsheet which I have already updated: Pogomoves Google Spreadsheet
Mewtwo nerf 14.08.2017
The legendary Pokémon Mewtwo got nerfed. Here are the new base stats and below are screenshots of the gym offense ranking before the nerf and the new ranking.

Attack: 330 -> 300
Defense: 200 -> 182
Stamina: 212 -> 193

Old gym offense ranking:

New gym offense ranking: