Super Grav update v1.3.7 adds some new Leaderboard and Achievements features:
In-game Achievements / Stats page:
All Leaderboard entries now show dots to signal if the score was in multiplayer - great if you like watching others' MP co-op / race replays:
The reason for the dots is multiplayer online replays can be pretty hilarious so this is an easy way to find them, eg when someone gifts a life in co-op mission to their buddy who then proceeds to go and 'accidentally' shoot them :D