GrapheneOS hardware options are substantially behind iOS hardware options. Also Graphene is somewhat annoying to use; I missed shots bc the camera app didn’t open fast enough.
Pixels are definitely not substantially behind iPhones hardware. In fact it is very much the other way around.
It is the other way around only if you live in a delusion and have some sort of hatred for Apple. 11 generations in and they still overheat...
My iPhone 15 Pro frequently overheats. Not to the point of halting the phone completely, but certainly to the point of it being throttled so badly that it's nearly unusable.