But, they are not very good to their own people and they are extremely distrustful of foreigners. Not just westerners but even in africa they've been caught acting with malicious intentions(the last example I read was how they backdoored the African Union's IT systems). Very hard to trust someone who trusts no one.
The primary fear should be wars and global instability instead of who gets to wear the #1 badge. It has not even been a century since WW2,the current chinese regime is operating as a response to WW2 and "running a marathon,not a sprint" to beat the west and russia. China dominating the west would usher in Cold War 2.0(or has it already,pentagon papers and all) except with higher stakes,in the end military dominance matters as much as economic.