Evola's interpretation is quite different. I recommend giving the book a try. If that seems like too large a commitment, you could also take a look at some of his essays on Buddhism. As you are probably aware, Evola was a great supporter of the idea of caste, but he did not at all identify Buddhism as subversive in that regard. There are a lot of tropes about the sentimentalism, humanitarianism, egalitarianism and self-denial of Buddhism, but Evola tears all of these to shreds in the Doctrine of Awakening and presents a completely different image of the Buddhist system.