What we learned: Week 6

What did we learn from Oregon's 57-16 win over Colorado?

Marcus Mariota's Heisman candidacy is only gaining steam: Just like Oregon as a team, Mariota didn't seem at his best in the first half against the Buffaloes, but his final numbers were again mind-blowing: 355 yards passing, five touchdowns and 43 yards rushing, two touchdowns. Scoring seven TDs, even if it's against Colorado, raises eyebrows.

The secondary isn't untouchable: Colorado WR Paul Richardson gave the Ducks touted secondary trouble in the first half, and not just catching the ball. Richardson burned the Ducks with a 75-yard TD pass on a trick play, and he also caught five passes for 134 yards -- 26.8 yards per reception. The Ducks kept him out of the end zone, and they held Colorado to six points over the final three quarters, but there were some early cracks that coordinator Nick Aliotti won't like.

Even a seemingly middling Oregon performance is dominant: There's not much to educate Ducks fans on this one. The first quarter wasn't great, as the defense yielded 10 points, but things were tightened up thereafter, and the expected blowout win was produced with the usual panache. It didn't seem like an ideally clean performance, but it was a 41-point win. Is it reasonable to complain about one of those? The Ducks are just that much better than a bottom rung Pac-12 team. Up next is a visit to the Ducks' good friends in Seattle. It might offer more of a test.