Back to the OP, who probably already answered his question ... "practice equals a worse player". We all know the quote from Clarke's first technical study.
"By practicing in this way your lips will always be fresh and under control.... The principle is the same as that of a physician prescribing three drops of medicine which will cure, whereas a spoonful will kill."
If I wanted to get in shape, I might run a couple miles a few times a week. I wouldn't start off by running 26-mile marathons. Why then do we think that marathon practice routines will make us better trumpet players?