It's my opinion that guards who are 305 (Levitre) and centers who are 311 (Wood) are small these days? Well, yeah, but it's based on facts. You just compare. Factually, they are small these days.
The line is a strength, I agree, but a lot of the reason for that is that Gailey is using a system to capitalize on the fact that our guys are athletic even though they're not power guys.
And that we're not a good power running team isn't pure opinion. On analysis, Football Outsiders has us ranked #31 in the league in "Power Success Rank." Let me quote them to explain that stat: "Power Success: Percentage of runs on third or fourth down, two yards or less to go, that achieved a first down or touchdown. Also includes runs on first-and-goal or second-and-goal from the two-yard line or closer."
We've succeeded 43% of the time in those situations. Only Atlanta is worse, with 38%. Here's where the genuinely depressing stuff starts. How many teams would you think were under 50%? Only four. We're at 43%, and only four teams are under 50%. Heck, only 13 teams are under SIXTY percent. We're awful at power running. Awful.