Eh. Hulk fails to stop TOBA from using Absorbing Man to open the Green Door, is only able to temporarily disperse a manifestation of the TOBA long enough to escape, and needed Creel to help him with that.
Sol's Hammer put him down, Rickbomination+Harpy killed him, and he walked straight into the trap at the old gammabase.
Hulk's managed to pull through all this because he can't be put down, but those are setbacks and outright losses he had to come back from. Even needing to be bailed out twice.
Edit: For comparison, the Green Scar would have steamrolled through everything, except for possibly the TOBA stuff with ease, and had no trouble with UV radiation.
Devil Hulk only really has ruthlessness, gamma drain, and intuition going for him. Even the immortal nature of the character has been implied for decades at this point.