Here is a series of old threads about character waivers.
https://www.google.co.uk/search?sour....0.Rr2Y8ZuFwO0
But bear in mind that every case is treated individually. Whatever issue INZ have found with your case, even if someone else has what sounds like the same fault (e.g. both were overstayers, or both had a drunk driving conviction), you are different people with a different job, home life, qualifications, mitigating circumstances, etc., etc., and those things can all make a difference in what INZ decide about the case.
Someone else's case can NOT be taken as a sure fire guide to what will happen to you, either the outcome, or the time until you hear a decision.