Can anyone tell me what exactly my chances are of say poisoning someone with a Vile Striker?
What about the Chance of igniting something with Flame Vaporizer?
How about how long/how much damage those aliments last for/Deal?
Basically can anyone quantify all the Slight, Moderate, Good, Minor, Strong, Low, Medium, High (+anything i have yet to see like say very high or ultra or very low)?
I'll answer part of my own question,
Vile Striker - 3-5% chance to poison an enemy, lasts 13-15 seconds.
We don't have any official information on these sorts of things yet, so I'm afraid nobody will be able to definitely answer your question. Many suggestions have come up for statistics, as in actual numbers, to be given on our Knight tab (P), but so far we have seen nothing of the kind.
Your best bet is to do what it seems you already have: time it yourself, and then compare it to other bonuses.