Actually, I think you're missing it with your straw-man argument.
Over time, Toews will most likely prove to be the better all-around player, but he didn't have a better season than Duncan, and that's what the Hobey is about. Had Toews not missed most of four games with an injury, had he not played injured most of the first half of the season, had he not missed six games at the World Junior Championships and had he not been caught in Judy's Tavern, he might have won the Hobey. But he didn't because Duncan stayed healthy, kept his nose clean and had an outstanding season.
While Toews was gone for various reasons and both he and Oshie were playing injured, Duncan was the guy who continued to put up points and was the glue that helped hold the team together. Even Toews admitted that it was Duncan's poise, maturity and experience that kept the DOT line going when he and Oshie were struggling.
You have to put "better player" in context of accomplishments and results, not just potential.