I hate Antminers. My Whatsminers (which I don't have any more) were far better. The only reason I keep buying Antminers is the availability of Whatsminers is very poor. There never seems to be any available when I am in a position to purchase. Antminers are also easier to sell used, at least here in the UK
That's worldwide, I suppose, mainly for two reasons IMO.
1- Bitmain manufactures a lot more gear than MicroBT
2- MicroBt focuses more on large farms than small miners (Bitmain is slowly following)
Regarding the second point, you can see it in their PSU, a single C19 plug for a massive 3-3.5kw is not available at every home, so many average users avoid them for that reason.