Most of the knives I've sharpened on my Wicked Edge don't even have the same bevel angles on both sides so I have to even them up. I start each knife by using a black marker on the edge and adjusting the angle until it takes the black off the edge, then I go to sharpening/re-beveling.
Some makers sharpen their knives on a grinder and I use to do that too until I realized that the finished knife, while fairly sharp, has about 10 different angles on the blade edge. I took to making a rough edge then finishing on the Wicked Edge with much better results.