Okay, I'm curious. I've believed that you're A LOT more likely to get shiny pokemon by MM breeding than you are by random wild encounter (no pokeradar, no chained fishing, etc). In my time counting eggs for this thread, I've gotten 1 shiny by breeding, and a whopping *6* by wild encounter.
This last session, I did spend a bit more time in the grass, first to check out what was in a few new friend safaris, and then to EV train some pokemon with horde battles, but still, I ended up with 2 new caught shinies (phantump from a friend safari, and hoppip from a horde battle), in approximately 150 battles all told.
Is it confirmed that MM breeding is better odds than random wild encounters? Are these numbers just normal for people with the shiny charm?
I'm not 100% sure of the odds, but I think the odds of finding a shiny in safaris with the shiny charm is the same or similar to breeding with masuda method and charm. Since you find five pokemon at a time in hordes, you're going to find shinies a bit faster by fighting hordes than by fighting single encounters. Masuda method, hordes and the friend safari are the easiest way to find shinies outside of chain fishing. IMO, it's more fruitful to breed shinies because you can guarantee a nature and at least three or four flawless IV's, but friend safari, hordes and fishing are better options than breeding if you don't care for IV's, since running from battles is faster than hatching eggs.