38 goals and 68 points in 78 games for a bad Buffalo team last season. He had a very good year.
The question now though is that a sign of things to come, or just one really good year? The Sabres are betting it's the former. It's such an outlier of what he's done so far in his career that it's really tough to call this a great (or even good) deal. For now, anyways.