Im going to guess pretty even. I had 554 and side by side with my Leupold,very similar,but that Kowa smaller.I favored the leupold for view,larger field.I also had a 774 real nice but much larger.The Leupold is a real handy size,mine fits in my jeep center console,think its 12.5 long.My guess is the kowa would be slight better optics.