Guild Wars 2

I have watched several video’s but haven’t really had this explained very well to me or by people who seemed credible. Basically what I am asking is any of the below worth while? Or does it sound way cooler than it actually is?

I like the idea of life steal – extra damage plus healing to me. I get the feeling that the healing (despite requiring proc and cool down) probably not nearly as good as say some kinda health rejuv food which also may be kinda useless. I go into a little more explanation at the bottom.
1. Does Omnomberry Ghost[s]: 66% Chance to Steal Life on Critical+70 Precision have any kind of cool down?
2. Does this cool down interfere with Sigil of Blood 5 sec Cool down 30% chance to life steal on critical?
3. So which is better? Will they work together? Are they still kinda weak?
4. Do life steal abilities have variables that affect how effective they are?
5. Rejuvenation foods or life steal worth while for wvw or pvp?
6. Any cool abilities on foods that you like?

Ok so I know that the cool down on proc rates is on some sort of global timer for other sigils with proc rates but does that affect combining
Omnomberry Ghost[s]: 66% Chance to Steal Life on Critical+70 Precision and Sigil of Blood 5 sec Cool down 30% chance to life steal on critical? Is the food on a cool down?
When a skill, sigil, etc. says it steals life is thalt always for the same amount or are there variables that affect that?
Example: Is it based on initial damage or initial damage plus condition damage or maybe just condition damage? This could really determine weather or not this sigil is worthwile to me on a shortbow that doesn’t hit nearly as hard but hits more often. Is it based off of +healing stats or condition damage? Is it a fixed amount? Does the food steal more or less life than the sigil? Food bonuses for stats seem fairly high so am I screwing myself out of serious damage or consistent health rejen?

I get the feeling that the food and the sigils might be canceling each other out (in terms of proc rate cool downs) but I can’t be certain. If the amount of health
returned is the same and the food has no cool down and has the %66 percent chance of occuring then obviously it would be the big winner. Maybe I would be better
off finding food with toughness or vitality. Or am I sacrificing a whole ton of damage output for a tiny but of survivablity?

Two more questions:
1.Rejuvenation: Gain regeneration when your health reaches 75%. Is this constantly on or just for a few seconds?
2.Compassion Training: Pets heal for more? How much more. Do they self heal for more or when I cast troll unguent?
Effective for semi-quick skirmish or even pve? Does this just affect pets that have a self heal attack or does this
affect felines as well?

rejuvenation is on a 20 second internal cooldown.
omnom ghost and blood sigil stack – but might be nerfed in the next patch.
ive noticed compassion training increasing natural healing

I’m using this with a Mystic Rifle and Omnomberry Ghost on my Warrior. It’s really hard to tell what’s causing the life steal to pop up. It could be just a combo finisher more than anything. I’d have to record game play to figure it out. Considering how short fight’s are in WvW, it hasn’t made a noticeable difference thus far.

They stack, and it’s great. When i’m using the shortbow, it steals 325 or 375 health every tick, and it doesn’t have a cooldown ( except for the sigil ). It’s amazing, i am creating a build that consists on replacing vitality with this food. So knight gear it is for me.

Also, compassion training is garbage last i checked. Even though my test was FAR from precise, i didn’t notice any change. If it is, its something like 5%.
I could be wrong though, like i said, my test was very bad.