By Sylph.Spiriel 2010-07-01 12:51:09
As others have stated, try Jump with and without AF feet, then try it again with High Jump. You will see the difference without even needing to parse.
Also, the other thread went back and forth about VIT stacking vs STR stacking in Jumps, and while I think they proved 1 VIT = 2 STR is NOT correct, they also showed that if you just need a rough, rule of thumb guess for a snap decision, then 1 VIT = 2 STR will work. I hadn't been aware High Jump is unmodified by VIT, but it makes sense.
While the information about Spirit Jump seems to be changing constantly, with the current belief of 1.5x TP with Wyvern, then I could see trying to toss in a couple Store TP or Jump TP pieces if you could use it to eliminate a hit on your way to 100%. Might be worth crunching some numbers to see if you can make it work. Just remember the magic 16.7%.
And while I stand by my comment about Jump TP gear, I'll clarify. Without any haste what-so-ever (Hasso, Martial Arts, etc,) it takes any weapon in the game roughly 60 seconds to get 100% TP (give or take ~3 seconds.) So Jump on the first 60 seconds, High Jump the next 60, Jump again the following 60, and then... timers are both cooling off. While merits might help with that, Haste and Store TP makes it worse. You can't rely on Jump TP gear to get you to 100% because you could also miss, and your timers may not allow for it on every 100%. So to clarify, "don't wear Jump TP bonus gear if you have something that would hit harder instead."
Wish I had time to find the older thread, but it basically covers all of this and more, with math.