Well even iOS is supporting controllers and android has for awhile.
Don't know if you're joking or not mate.
I'll take it as a serious statement. I've seen upwards of 10,000 people but less than 100,000 people gaming on a phone. how many have I seen with game controllers etc.
Zilch. OK this is annectdotal though I see the last NPD mums for the nvidia shield numbers was 2000 during launch month.