Learn to read. There just isn’t a lot of evidence that one thoroughbred jockey is much better than another at getting his mount into the winners circle.
Indirectly these things can matter; trainer intentions and stuff like that.
But put a good harness jock on a glue factory special and race(pace or trot) him against a lousy harness jock on a good horse, and that good jock can often turn the tables.
If you don’t believe it, go to Equibase and download tens of thousands of races to see for yourself. Or be smart and let those who have done the research tell you.
“Learn to read.”
No reason to insult. You made a stupid comment, I didn’t insult you, I made a joke.
Screw you.