Oregon's achilles has been O-line for years now.. they need to recruit that better... but no.. keep on stacking up on RBs... but then again.. it's a tough offense to O-line for.. with all crazy run plays they do.. but still they've been especially terrible this year... and it already cost them once.. and honestly it's the one reason I don't personally rank this Oregon team very high.. they have a soft secondary and a weak o-line.. both which can be exploited.. and when you get Oregon as "just" a run team.. they can be beaten.
No, it isn't. Oregon's O-line play has been extremely good the past several years, which is why they've had so much success. Yes, the linemen are smaller, but they are fast and execute very well. Hell, there's no better testament to their success than the fact that in games where they have struggled to get a push in the center of the line -- such as against Stanford and in a few games this year -- Oregon has done poorly and typically lost.
Plus, those Stanford teams and this Utah team have had extremely stout defensive fronts, so I don't think the fact that Oregon O-lines have occasionally struggled against good, physical defenses is some sort of black mark against them. And even then, they've done well against tough defenses before too.