I'm pretty positive he's talking about the gap between ps5 and Series X|S will be less than the Ps4 and X1, which is entirely possible.
Weird way to put this then, cause he said (and that's a direct quote): "but I expect the PS5 to sell less globally than the PS4"
"Quagmire, are you the type of guy who takes 'no' for an answer ?"
"My lawyer doesn't allow me to answer that question"
PSN ID: skmblake | Feel free to add me