The wear isn't supposed to be equal. Traditionally, you're supposed to hone the omote more than the ura. Some people hone both sides equally and haven't had any issues though.
Here's a link to a Japanese man showing his technique to honing Japanese razors. His English isn't perfect but you get the gist of it.
http://www2u.biglobe.ne.jp/~bjb52646.../razhoning.htm
That was my listing.