I think you have that the wrong way round.

Taking a specific example, "Lisp in 100 lines of Ruby" means that once you have Ruby, you have Lisp. That means that anything you can do in Lisp can be done in Ruby, and hence Ruby is at least as powerful. That means:

X in (some small number) of lines of Y

implies

language_power(X) <= language_power(Y)

Exactly the opposite of what you said.