Wow, you guys should work for RIOT with this gorilla math. Just because the total MMR of both teams is almost equal doesn't mean the game is fair. what you're actually saying is that a game can be fun if you have 4 bronze players and 1 LCS player versus a full Platinum team. It will be fun for either the LCS player the 4 gold players, but I doubt it ever being fun for the bronzies.
Balanced games should be within the respective elo's of premade players. if a silver 5 and a gold 1 player duo que, there shouldn't be platinum players in the game nor should there be bronze players. That's the whole point of duoing with lower elo people to get higher MMR for the lower player but lower MMR for the higher player.
There is a world of dfference between gold and plat players and matching for example a gold 3 mid versus a plat 1 on a random game, doesn't seem fair to me.
My point is, the game felt like it was a bit balanced, like this season finally came to a point where there was a point we could say yeah nice! and now it all feels to be turning to shit again.