I see the edge of a weapon the same as the cleanliness and operation of a gun. I can use a gun, clean it, and it's good to go, in a state of readiness. Since I have other hawks to use, abuse, and have fun with, I prefer to keep the nice ones just that way, nice. I do understand your point, so if I ever need to resue, breach, or fight, I won't worry about damage.
In comparison to the Sayoc, the JW is lighter, shorter, faster in hand. The spike of the JW is very sharp, it comes to a point, a precise point. The Sayoc's rear spike is more like a flat head screwdriver, it could punture, but it seems like more for breaching, breaking glass, etc...
The JW is the sharpest hawk I own, or have ever held in hand. I see it as very fast and it would cut deep in a fight. The longer reach of the Sayoc, plus it's weight, and front spike make it a powerful weapon. The weight is great, but maybe a little bit slower in hand, and the curved handle is awesome for swinging it in a forward direction. Yet, the handle curve does take away from using the rear spike with the same grip/comfort/reach. Then again, it's all business in the front, the spike is there for breaching, not fighting so much.
The handle of the JW allows for using both the front edge and the rear spike. The beard is sharp, as is under the spike, so cutting through sheet metal will be eaiser than the Sayoc.
I like them both, but they are quite different. Another similar sized hawk of interest is from Omnivore Bladeworks/Self REliance tools, the Jackal. It's also very different though, in a good way!