So that could explain why I could tell a difference on my 510, especially if it's well seasoned?
Correct, comparing to some custom made "carlos atty" gets us no where. Apple to Apples folks, is the only way to make real world comparisons, on the same mod is also helpful, using the same brand attys, dripping, carts, etc. In the end if one is happy with the purchase, regardless of claims of others of a huge vaping difference, then I have no argument. Enjoy.