My experience with lawyers is this.
1. Check canlii see how many cases they have handled. I think this is the best objective way to compare.
2. You can also read the cases and try to get a feeling for their performance in court. A good lawyer would get his female client sole custody and get his male custody shared custody any lawyer who can't do that should be serious assessed.
I've beaten all types of lawyers in litigation/trial:
-an overweight 45 year old man
-homosexual 35 year old male lawyer
-ditzy latino female texting 30yr old lawyers
-50 year old quebecois obese experience women lawyer
-60 year old quebecois lawyer
-I think I also got a firm to drop my ex as a client because I was owning them too much.
So I think its hard discriminating on the basis of either gender, age, sexual orientation, looks (they were all average looking) or weight.... I beat them all, send them home packing - I don't discriminate.