My opinion, I don’t think there’s any correlation or causation as it pertains to flavor and potency.
Purple Punch generally speaking, very flavorful strain but ironically doesn’t pack much punch IMO.
Cake strains usually for me don’t have much flavor, but have a really nice albeit short-lasting buzz.
This is the thing everyone seems to hunt for; that balance between top potency and top flavor. For me, that strain in general is Peanut Butter Breath; lots of lingering flavor, LOTS of buzz and it stacks