No they don't. They just say that most likely, they both did some type of early expansion strategies and Yamon started out trying to get much bigger, and so he was slower to tech - or at least slower in mounting a defense/offense. Becauase of this, Viruz probably got some early damage in but Yamon survived and was just too big by then.
There are other possibilities of course as to why the Stats could be that way, but the one mentioned above is by far the most likely.