HGG Community Forums

Common saying is that PT score has nothing to do with breeding ability. Pt score is used only for showing. While having a good score is nice, it does nothing for the quality of your foals, only the padding in your show bonus. :D

So in other words the lower pt with supirior to parent will throw better offspring in the long run compared to a higher pt but just as good as parent. Makes sense. Thank you.

Each horse has a breeding ability score, which is a hidden number. This number is what papers and comparison testing are measuring. When a foal is bred, the breeding ability scores of both parents and not their PT scores go into the magical H&J numbers blender and out pops two numbers- the foal's breeding ability score and PT. The higher the breeding ability scores of the parents, the higher the range of possible breeding ability scores and PT scores for the foals. So a horse's PT score comes from their parent's breeding ability scores, but doesn't affect their own foals. Only the breeding ability does.
So a horse with a super low PT but who papers higher or tests superior will produce higher PT foals on average, while a horse with a super high PT but who papers lower or tests worse than will produce lower PT foals on average. The first is a better breeding horse, while the second may be better suited as a spelded show horse.
For a better/more in depth explanation, check out this thread: https://www.huntandjump.com/forum/discussion/37648/comparison-testing-questions#Item_11

Huge shout out to @Stone Silo Farm, who explained all this to me, and whom I am paraphrasing here