When I opened the link I didn’t get all that information.
I will take your word for it and hope I never have to find out for real.
What I would add is that, having practiced gliding in a variety of aircraft fits, the maintenance of a constant sight line angle and careful energy management will let you know how you’re getting on. Therefore I believe that even a more draggy engine would be no worse than gliding in a heavy fit and sensible decisions can be made in any case.
BV