This was the fundamental basis for their classification. It didn't mean Heavenly Gang Techniques were inherently stronger than Earthly Fiend Techniques.
'Well, in terms of starting point, you could say Heavenly Gang is stronger. After all, Heavenly Gang Techniques start at Tier Four Magic Level, while most Earthly Fiend Techniques are Tier One and Tier Two.'
However, when comparing Techniques of the same tier, there was no clear distinction in strength. In Hongmeng, there were no inherently strong or weak Techniques, only strong or weak Cultivators. The degree of development and cultivation determined a Technique's power.
'Of course, that statement is a bit of a paradox. For example, the Fire Feather Skill is inherently stronger than the Fireball Technique. But the Fireball Technique is simple to learn, while the Fire Feather Skill is difficult.'
