Well basically yes and no,

They win with the rules as they where, as like any Mazda book they classified the engine as it just have 2 combustion chambers cuz they are like that but what they didnt say is those 2 combustion chambers share 2 rotors with 3 sides each, in a 2 rotor motor, thats why they are the 1.3 (13B) that consume Gas like a 3.9, go figure,

But Mazda did play the rules on that race fair and square, and they win legally, but the complains from the big $$$ competitors landed instantly like a 10 megaton BOMB and FIA did what they do the very NEXT race and the rest is History.

Toyota is doing a Big effort this year to get away with a Hybrid Car i hope they do have a win too, in Le Mans, but Audy and others have a very good Hybrid setup too, that is as good if not better, than the Toyota one, lets see what happen!