Although there may not be any couplers on Escapes which were actually made by Atwood, the front of the latch assembly is what is important for fit of this lock, and the one used by Escape is shaped essentially the same in the front as the Atwood (as you can see in the eTrailer photos, and I can see by comparison to the Atwood I have on a trailer).
The Proven Industries page for the 2178
shows examples of some of the couplers which it fits, with a different style of latch.
For the lower price on the right lock, RVUpgrades.com might not be an option: they seem to offer the 2516
, but not the 2516-A
... and they are two different models according to the manufacturer (Proven).