> Just from skimming over the tests, it’s obvious that Rspec is more readable.

And that's where I'd disagree and my tastes differ, I never quite got the Ruby fetishism for almost-sort-kinda English DSLs. It's still baffling to non-developers and I'd much rather read a more regular programming language syntax, never mind that abusing the syntax can lead to some weird error messages. (Not saying that RSpec/Cucumber fall into that trap, as I never had that much experience with them. Like I said, kinda turn-off for me)

A bit like Lisp macro abuse or too much parsing in Tcl.