I don't believe this is correct for long haul - all long haul fares (with only some irregular exceptions) earn Air Points, but there are several fare levels which won't credit to partner schemes. I had to help a friend with this a couple of months ago - he's a member of Mileage Plus and Air Points, and had tried to credit flights to UA, which didn't work and then because his UA no. was recorded, he couldn't claim the Air Points online and had to go through the contact centre - messy.