Based on historical data points we clearly see that both Android and iOS devices were vulnerable. Your own links shows this clearly. There is no evidence to suggest that Chinese devices are more vulnerable.
There’s just real world evidence that the devices aren’t as secure as some alternatives.
No, there isn't. You keep saying this, but you haven't provided a single source showing that these devices are more vulnerable.
The latest link you provide once again shows that many Android devices are vulnerable. But cellebrite is just one rootkit, not the totality of vulnerabilities either. That's the whole problem. You're ignoring what hardware backdoors may be present in US supply chain, and what other rootkits might exist.
Given that the US is a known bad actor, it has to be assumed that these devices are not safe. That's just the reality of the situation. Meanwhile, Chinese companies have every incentive to make their devices safe from western malware and have zero incentive to put in backdoors for US or Israel in them. That's what makes these devices inherently safer. The incentives matter.
graphene is at the top, then stock pixel then literally everything else.
Again, this is a baseless claim that is not supported by the evidence you've provided. Unless you can show proof that Chinese current devices have vulnerabilities that are not present in current stock Android, then you need to retract your claim.