Enhances "Jump" Effect

I find this doesn't boost my accuracy on jump, but it will occassionaly boost my damage by a (slightly) random amount. I'm not too sure if it's random or not, maybe it depends on the job. But, before i macroed these in to my jump, my jump did mediocre, maybe just a bit more than my regular damage per swing (around 130). After i macroed it after curiosity i noticed that every once in awhile my damage for jump would spike like crazy. anywhere from 3-5 times the normal amount. What i wonder, is if the AF+1 gives more of an enhancement or not, if anyone knows.

BTW: Drake Ring isn't worth macroing in. The activation on the latent i think is less than 100% tp and yellow HP. and even then you have to remember it doesnt always proc. you could make a good arguement that it is useful for DRG soloing though, since you're usually in yellow HP, unless you have deep breathing merited and have lots of wyvern HP+ and can throw out 500 HB's lol.

What does "Enhances Jump Effect" really mean? more power, greater accuracy? If anyone knows i'd appriciate any insight to the matter