I think there are enough small miners out there that it does make a difference to Bitmain. If not, they wouldn't continue to sell to us. Take a look at just about any pool, the split between large and small miners.
Kano has about 5-6 miners over 1ph in gear with about 13ph out of his total 26
Slush has about 30 miners over 1ph with about 130ph out his 210
That's just a couple of pools, but I would be willing to bet it holds just as true on Antpool or F2Pool.

That's still a lot of gear going to smaller miners.