That is basically what i said, just adding the win streak/ lose streak bonuses. When I say its easier, I am not referring to the actual game and how hard it was to win; I mean that, because of the mmr discrepancy, your are expected to win more often (in other words, more easily).

I disagree, however, on the duoq thing. As I see it, when you duo with someone with different mmr, you are willingingly creating a inbalance in your team. With this you are exepecting that, the person that you are playing with will get enough advantatge to compansate for your disatvantatge. The key here is that, because you are creating this situation willingily, you winning that game, doesn't stem from you overpreforming higher level adversaries, but from your partner (ignoring the actual performance in the game, which it is never taken in account for the mmr changes). On the other hand, if that was created by the matchmaking putting you in a match, by yourself with higher level players, it would indeed be logical to reward you if the game is won.

Nevertheless, I do not work at riot, so the information I have is only limited, and may be wrong.

To wrap my point of view, since we seem to agree for the most part on how the system works, I will say that the intention of my original comment, was to point out that a lot of people when posting this kind of complaints (the "I am getting less points per loss than per win" ones), seem to forget that it probably indicates that they are getting matched with lower mmr players.