The protective capabilities of a high-grade defensive divine artifact show a significant improvement compared to an intermediate defense divine artifact. The price, as well, is more than ten times higher than that of an intermediate defense divine artifact.
However, when compared to Jing Yan's Daluo Immortal Body, even the defense of a high-grade defensive divine artifact is negligible. Jing Yan's Daluo Immortal Body can withstand two consecutive full-power attacks from a martial artist of Yin Hua's level. This endurance to two attacks is on the premise of no defense whatsoever.
This means that Jing Yan could stand there without moving, not even channeling any divine power, and purely relying on his physical body, he could withstand two full-power attacks from Yin Hua. Such defense is absolutely unmatched by any defensive divine artifact.