in the fictional game series(?) which Dex is from, is there a black sheep title, a Doom 3/Mario 2j/NSMB sorta title that doesn't get the same acclaim as the others?
No, they're all pretty solidly a 7/10. there was that one by a different developer during the era of taking the last game and doing it again but worse (crash bandicoot: the wrath of cortex, spyro: enter the dragonfly), but that was cancelled prior to release, thankfully