Not hard to believe if true. It's easier to push out higher graphics out of the box with XSX, you'd be dumb to disagree. Now the devs are having to find ways around the limitations of the PS5. I'm sure in the end they will look the same to the average consumer.
No, you are dumb when making statements like that from currently known specs.
Unless you are experienced dev with both dev kits, that is retarded bullshit.
Like 18-20% GPU difference would make it run perfectly 4k on xsex and not even 1080p on ps5
After first year we will see if either pulls out "secret sauce", by better tools/api/customizations etc.
But at the moment both have so similar specs that if one can run it, both can. (Unless there is huge problem on devkits etc, and most sources state that ps5 is easy to dev to).
So, this "insider" probably is just sad biased xbox fanboy of being jealous of Playstation brand popularity