DW Furry Warrior - MH vs OH

I see that sim has tendentious to use slower and stronger (with more damage per swing) weapon as off hand instead of main hand like:
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  • Every ability strikes with Main Hand.
  • Stronger Main hand with Whirlwind, Cleave or Overpower doing more damage.
  • Thx to HS/Cleave queuing faster Off hand should hit even 2 times with extra hit chance.

Also very often i see Hanzo Sword as Main Hand that makes me curious.