This info is edited from a post I made from about a year ago. In addition to the parallax controls, IMO, the other distinguishing attribute of this scope that is very appealing is the optical quality, particularly the way it handles high glare. As with my post about the Marches eyebox, this test and viewpoint is based on my own observations, and could certainly be subject to scrutiny.
Hunting every year in Alberta, I have a very productive whitetail stand that has produced well over the years. The biggest issue though, is that at prime time, the bucks show up at 500-700 Yards and I'm facing directly west with the dreaded orange/yellow haze of the setting sun in my scope and the deer positioned in a lower light, shaded area. I have had to many times pass or wait out on what would normally be a good shot opportunity. I always used either my NSX or Huskemaw scopes mounted on my 6.5x284's. Unfortunately, the terrain does not allow a better vantage point. Being frustrated by this, when I returned home, I decided to try and replicate the hazel conditions on my property at 250 yards, and test my various scopes to see if there was a difference in the clarity of the sight picture between my best scopes. To my surprise, of my scopes tested under identical conditions, (Vortex AMG. Nightforce ATACR F1, Nightforce ATACR-first gen, Nightforce NSX, Huskemaw, and March 2.5x25x52), the recently purchased March proved to handle the haze best. It enabled enable a clean shot on a comparably sized and colored target(grey rock) substantially better then the others. The NF/F1 was second, having a slight view of the target. No target could be picked up with the other scopes, only an the orange/yellow haze. Just to confirm my findings, I repeated the test on two more separate occasions with similar results. Having done some searching on the web on this reflective haze effect, I read that it's caused by a the reflection of light off the internal surfaces the scope. It is controlled by light absorbing internal coatings which help to reduce the effect. The lens coating, and internal geometry can also influence this effect. In my crude test, the March appears to deal well with this. I'm anxious to give it a try this coming season to test it out on that Alberta stand. This past season, I did not get the opportunity to test it out.