Not entirely.
Depth of field is also related to focal ratio, just as it is in photography. You can see this yourself if you artificially restrict the exit pupil (stop down the optic) on a binocular. You can do this by cutting a disk of paper with a hole in the middle and putting it over the objective lens, restricting the exit pupil. This is pretty amazing actually and the depth of field gets immediately and obviously deeper.
Besides this difference between optical designs, there is "perceived depth of field" differences where some binoculars seem to require much less focusing than other designs, for whatever reason. All of my favorites seem to excel in this area, relative to their competition.
As far as the "best" handheld binoculars, that is mostly just a "favorite" for the individual.
Everybody has a budget, too. It is kind of frustrating to constantly hear that people need top end glass to be effective hunters. That really isn't true. People need to get out and hunt to be really good hunters and buying $3000 binoculars can really get in the way of hunting for a lot of people.
Even the European "Best of the Best" aren't really the best anyway, if you have the money.
You could always spring for Nikon WX and tell all the lowly Swaro owners they just keep saving until they can afford a really good binocular.