They are in the AFC. Only top QB in the NFC is Hurts, Rodgers ain't it anymore and the best of the rest are good but not great. Carr can come in and immediately be in that pack. If it was Dalton holding back Carmichael's scheme then it's possible Carr can separate from the likes of Goff, Stafford, Daniels and Murray.
Carr can change plays at the line, he can call protection instead of McCoy (which is insanely underrated), make all the throws instead of dinking and dunking, he's an actual QB.