Per the same website, the Arc 1xAAA Premium has a throw of 53 Lux and an overall output of 520 using alkaline batteries. The Gerber has a throw of 22 Lux at beam center and overall output of 212 using alkaline batteries. The Arc also hits 50% at ~5 hours.
The
Peak Matterhorn is a very good light too, I keep one in my Mission Wallet.
Comparisons:
HERE.