The point about real skill I don't know what your talking about.
I wrote: "Chances to gain depend on your real skill and chances to succeed and don't depend on your race or type of a soulforge."
This means:
Chances to gain depend on:
1. Your real skill
2. Chances to succeed
Chances to gain don't depend on:
1. Your race
2. Soulforge you use
For example, if you have 70 Imbuing and 50% chance to imbue a property then it doesn't matter what is your race and what forge do you use. (But a human at a home soulforge and a gargoyle at the queen soulforge have to use different items to get the same chances to succeed.)
Where am I wrong?
Humans stay in the optimum range at each level for longer before adding more properties on the item.
This means that when a human need to imbue 7 luck a gargoyle need to imbue 10 luck. Do you see any difference?
Well sometimes you spend 1 more citrine for the imbue that you do 1 time per a piece (so 1 time per about 40 attempts). Well may be a human can save 100-200 citrines while training to 120 and waste 500 enhanced essences for a Power Scroll. Tell me please any reason to be a human?
I guess if your training by unraveling
I suggest start to train by imbuing earlier.
If your friend want to train by unraveling he should do it the proper way:
1. Prepare (lock) a lot of bags with stuff to unravel near his home soulforge.
2. Get satyr's disco.
3. Recall to the home
4. Use a SOA
5. Unravel all stuff
But I myself prefer to use imbuing to train.