In essence, what could mental ray's GI could also be called, say in another render engine...
in VRay would it be a similar principle to what? Brute Force?
And not just the Mental ray GI,
could Mental Ray's Irradiance Particles be said to use the same principle as VRay's 'Irradiance Map' and so on and so forth..
Or is there any useful relations to be made to the solutions other engines use at all?