Most of the "youth" arrows are just mislabeled. They should be labeled "junk". I spend more on my kids arrows than I do on mine. I don't know anything about the arrows you are asking about, but my son shoots 900 spine arrows cut to 23" with a glue in 50 grain point. They are the Beman ICS energy shafts, and run a little over $80/doz. These things are very light, and at 32# he gets over 190 fps and outstanding flight with them.
Kids arrows are often marketed in a cheap price range - this is because they are assumed to be basically disposable. They are disposable because they are so crappy the kid can't hit anything with them.