I tried to figure this out. It seems it includes additional features for bypassing censorship, to be specific Gool (warp to warp) and Psiphon. From https://github.com/bepass-org/warp-plus :

Psiphon Chaining: Integrates with Psiphon for censorship circumvention, allowing seamless access to the internet in restrictive environments.

Warp in Warp Chaining: Chaning two instances of warp together to bypass location restrictions.