Just this last season, a buddy and I spotted a deer in a cut line right at legal shooting time, first thing in the morning (30 min before sunrise). The deer was about 90 yards away. I looked it over through the Vortex Viper 10x42, and then we decided to take the nice, juicy doe. After the recovery, I discovered 2" spikes on the "doe". Neither my buddy, looking through a Zeiss Conquest 3-9x40 on 9x, nor myself spotting through my FX3 6x42, were able to see the spikes before the shot. Luckily we had both buck and doe tags, even though anything under 4" of antler technically counts as an antlerless deer up here, but what would have happened if we were without a buck tag, and the antlers were 2" longer?

All else being equal, more light and more clarity are never a bad thing, IMO.