Case in point
Now I'm only using the 2010 specs cause it's easy to compare US to UK (since that's what's currently available). I'll search to see if I can find historical specs for 03 or 05.
But 2010 Outback
2.5L U.S. Tow Capacity - 2700 lbs - UK Tow Capacity - 3968 lbs (1800 kg)
H6 US Tow Capacity - 3000 lbs - UK Tow Capacity - 4409 lbs. (2000 kg)
Which SUGGESTS Subaru is not unique for de-rating their chassis in the US to avoid a perception of liability in our overly-litigious society.
Now I need to see if I can find older specs to see if the same was true for 03-05 Outback and/or Baja (again I still don't know if the Baja was exported or not, I'm assuming not).