This is great. I've seen this stuff before, and I always enjoy reviewing the comparisons. I'm looking forward to riding after knee surgery when I can ride straighter again. I noticed when I hunter paced after my knee giving out really badly this fall that I was crooked (balanced, but not centered), and my horse wound up with a sore hind end compensating for me riding while favoring the knee. I always thought that riding through my knee issue was just a matter of sucking it up and riding, but when I rode when my knee was that bad, I felt how I was uneven in my seat bones and as a result, caused my horse to have to compensate for me.
Even the best saddle and highest tech pads won't fix an uneven or unbalanced rider. I'm really looking forward to when I can ride post-up in several months and seeing how much better our jumper rounds are :)