You must not live where there’s wildlife… I can tell you it’s basically impossible to see deer at night without your brights on until you’re basically hitting it.
It's not as if you cannot see with normal, old-fashioned headlights. That's what I'm confused about; the problem with headlights at night is that they have a distance. So rather than being unable to see, what you actually get is less reaction time. ie, rather than seeing 'til the next hill or turn, you can really only see to the end of your headlight beam. Ultrabright headlights actually make this worse; you have no night vision whatsoever due to their brightness, and and anything outside of the beam is completely invisible. This isn't as much of a problem with old fashioned headlights as they don't trash your night vision quite as badly. In any case, the problem is that you have less time to react due to only being able to see within the beam of the light -- and brightness really does not affect this.
This is totally aside from that fact that the moose threat is NOT that they're in the road 1000 feet ahead of you and it's too dark to see -- it's that they come right out of the woods before you have time to react -- and brightness, again, does not actually affect this.
Moose aren't invisible to a normal headlight.
You would be an irresponsible nutter with a death wish to try through! And if you crashed, "I was driving at / under the speed limit" wouldn't wash - you would be charged with Driving without Due Care and Attention, or Dangerous Driving depending on the consequences of the crash.