BP's eat and grow more than we thought?

[Raven01]

Show me one single instance of this. Seriously.

Are you seriously saying you have never seen an overweight Ball Python? Not even one that wasn't force fed?
How long have you been around these animals again?
Come back to chat when you've done necropsies on animals and noticed larger than normal fat deposits and atypical organs (yes even in BP's although it does seem less frequent with this species than some others) One of the reasons BP's are decent starter snakes is precisely that they seem pretty forgiving of minor bad husbandry practices.
If your BP needs to be fed after 3 days, you are offering undersized prey.