They made 1.5 billion alone with Wechat. FB wishes they could pull that with Whatsapp.
Yes, WeChat is very different from Whatapps. I think it's something like $7 dollar per user vs 17 cent in 2016. This is why people shouldn't worry about Tencent pulling the same maneuver for West endeavors.
They are smart and knows what works and what don't. What they do in China is very different from how they approach the West, even on companies they acquired or have a large stake.
Chinese MNC companies alway aimed to secure their domestic market first and then if they want to venture outwards, they will used the billions they earned domestically to outright acquire other companies, preferably. More so in entertainment industry.