I can't refute that the E3 is rated at a "mere" 200+ lumens, but it can be had with an asymmetrical lens that has a horizontal cutoff:
http://www.supernova-lights.com/en/e3_comparison.html

If I'm on a dark trail and see someone approaching, I slow a bit and aim my Dinotte at the ground in front of me. It's bright enough for me, but it just sprays light all over the place, too. I've been on the receiving end of super-bright headlights, and really, it sucks -- I can't even see the path under me unless I block the oncoming light early enough to not ruin my night vision. Having a light with a good cutoff, whether an E3 or Seca, is much more considerate to other people.