@jehtblu: Have you even read the article? He knows that Logan has great skill but he never uses it in combat in comics.
So next time you read a comic book with wolverine in it, and you see him cutting some ninja in half, stop and imagine the amount of skill it took for him to get in and land a lethal blow on a highly trained opponent, using a very short ranged weapon(s). Martial arts.
Probably not as much as you'd think, considering he is a mutant that has enhanced senses, speed, agility, reflexes, and strength, and considering his claws are made of a fictional metal that can cut through just about any known substance in Marvel. Slicing through a meat-bag fodder ninja or two, highly skilled or no, probably doesn't require too much "skill" on Wolverine's part. If a writer doesn't imply that it does, I am not going to assume that it does for those reasons I listed.