I have a male normal that eats like that too, last time I fed him I came out of the room and told my girlfriend that he would probably try to eat a frozen one if I dangled it in front of him.
My lil lesser is a beast too, earlier this week he had a 23g mouse and then my dumeril's refused a 22g one so I offered it to him, he snagged and downed it like it was nothing... and he's only 85g. I wouldn't make a habit of feeding like that but it was better than tossing it cause he was the only other in quarantine that could use it.
Yea they know what they are doing better than we do, I think if they feed like that then they probably have the metabolism to deal with it. But again I agree with not making a habit out of it. Gotta love a hungry snake though, especially with these picky BPs.