AC vs Hp's when over the soft cap

[Adele]

Hi everybody, I'm posting this topic of AC (armor Class) vs Hp's (hit points) because I'm not that familiar with the new rules on caps and %'s worth then over soft cap (with new builds). The server I've been playing on seems to have really High numbers on ac. By this i mean for example you can have 10k ac and 60k hp and get lost looking at it.
I was informed this system is based off the emu rules for ac soft cap. However I don't know if there is a limit on passing the cap, where the number becomes just a number without effect. If my memory is correct I think a bard for example's base cap used to be like 120 worn AC and about 30% of everything after (so every 100 AC is 30 real AC).
I'm sure this can be confusing for players on all custom servers and useful to anyone trying to understand best equipment to use. I know there are several variable as far as classes and base mitigation etc , so if possible the simplest explanation ( so even I can understand ) would be a great help.

Oh, someone also once told me something like 9 ac = 100 HP or something Of the sort. If there is such a rule or way to explain it like that I'm all ears. I've never seem 10-30k AC in game and don't have a clue as to GO for more AC, or HP when in numbers that high.

Thanks for taking the time to read this post, and I do feel it can be applied everywhere in emu. This is for all players and classes, Though it varies with skills. However people like me might not know where to begin, maxed at live % AC in the past.

Thanks in advance,
Adele