Insomniac's community manager said in 2018 Ratchet PS4 was their "most successful Ratchet/Insomniac game of all time" (this was before Spider-man shipped). For it to outsell their other R&C games and more, it therefore sold at least 4 or 5 million.
It was a low budget movie tie-in $40 game that shipped a month before Uncharted 4. Given how it got a bigger budget full $70 sequel green-lit after, I'm sure Sony was very happy with it's sales. And its 85 metacritic. And Rift Apart has done even better critically, and looks to be on pace to sell 8-10 million lifetime.
While there’s no doubt that its upcoming Spider-Man game for PlayStation 4 will be a best [...]