Welcome rtv. :-)

The wins/losses ratio is useful in conjunction with the rating but is not directly comparable. It depends on the ratings of your opponents, so, for example, a high win count against weak players will not achieve a high rating.

Here's the brief BrainKing explanation.

And here are two in depth articles on the formula. It's a chess formula but is used for all games. [so far, hint hint, Filip, lol]
USCF Rating System and Chess ratings.

They're a bit mathematical but have a read of them and see how much sense they make.

:-)