One should refer to the average value of Dharma Power for a Core Formation cultivator. From Qi Refinement, the average minimum was 1 Qi Strand entering into Foundation Establishment, which would grant 10 magic power at the start.
If this same bottom-tier cultivator managed to scrape their way into Core Formation, then their Dharma Power would be 20 points.
Dalvin had maxed out Qi Refinement with 10 strands, gained 400 Magic Power at the start, and now had 800 Dharma Power to start with. He was actually quite monstrous in the sense that, at Core Formation Level 1, he had more Dharma Power than someone at Core Formation Level 6 if they were at the general average.
Of course, fellow talents like Ling Long and Xue Mei were neither limited nor so weak. Not only was the purity of their Dharma Power high, but their techniques and quantity were not something that the average cultivator could contend with.