For sure, I just mean you cant assume Retro will do great since they did 3 already because it's not the same people.
And yes they have hired alot of people who had experience with other big games. If I recall they got some people from the studios you mentioned and I also think people who worked on stuff like Darksiders, Crysis and Bioshock but I might be remembering wrong as well.
I really hope the rumored Star Fox game by them is real and releasing this year, it would be a real shame if they have nothing released between Tropical Freeze and Prime 4, that will be like 7-8 years between releases for them.
Yeah, we can't be sure that Retro will make a good game. You're right.