I hesitate to respond, but can't bite my tongue on this. I hunt NM, and use SLC's for hours each day hunting (usually). In theory bino's can be readjusted so the animal is in the center of FOV, but in practice...when glassing big country, that's not how it works. This applies whether using them handheld or on a tripod.
For example, say you're watching an area (a bull bedded in the area and you're trying to find antlers), you have no idea where or when his antlers will glint the sun. A bigger FOV is a distinct advantage! When scanning giant mountain sides, you have to stop and look under trees, boulders, etc. Keep scanning and you'll miss animals as you can't pick out the motion of the animal from the motion of scanning. If they are bedded and barely visible, you'll skip right over them. I can't tell you how many times I'm watching a hill side and all of a sudden critters start moving that were not visible 10 seconds ago. They are feeding in and out of trees, ravines, etc. Bears, elk and deer are perfect examples...they move nearly constantly unless they are bedded. All of these cases are where the biggest FOV (and optical quality) is very advantageous. It may not apply to deer hunting in PA. As WRO pointed out, you may need to experience it before you can appreciate it.
With all this said, I'm very happy with my SLC's (as is my son and GF with theirs) and have no desire for NL Pure's simply due to cost. I know many hunters in NM that use $3k+ bino's...they do make a difference. There is a thread about what the most important piece of hunting gear is, and many (most?) of the replies was good glass.