I don't think I'd take anything in a MT article as gospel...
If they can get something as major as suspension wrong...
(The following is excerpted from this MT article)
"Augmenting a full-coil suspension that uses MacPherson struts up front "
I'm not saying they're wrong on the weight distribution, I'm saying it's certainly a possibility...
And PK is spot on with regard to the max inflation pressure...max load = max pressure. Just because you CAN inflate to 80, doesn't mean you should.