I just found out Oppo topped Huawei. Last year, Huawei was #1. Two years ago, Samsung and Xiaomi were tops. Xiaomi was dubbed the Apple of China at one point. A year before that, Lenovo was tops. You see where am I getting at? None one OEM stays #1 for very long in China. It can change every few months. For all we know after watching Captain America: Civil War, Vivo could be next in line to be the #1.
^ Look how fast Oppo accelerated at #1 from two years ago. Look how fast Samsung and Xiaomi fell from since. Volatile market. Oppo is stalling Huawei from catching Apple at #2 globally within a few years.
Considering how selfie-obsessed Chinese are, it's no wonder R9 is the best selling phone. All you have to say is 'it has the best camera to take selfies' and they'll buy it. This is kind of my point as well as yours: these is pretty much zero brand loyalty in China. Chinese will pretty much buy whatever they 'feel' is right. It's all about marketing.
The vast majority of Chinese who use iMacs or MacBooks don't even use macOS. They install Windows on it. It's the freakin' stupidest thing I see here, so many Apple computers with Windows on it.