I'll take the sum of what I have with Roeth over the "potential" of what you have with Schaub(doesn't matter who his weapons are if he can't stay healthy) or Ryan (a littlew closer, but safer pick is still Roeth). Also, looking at just a small snap shot can leave you without the whole picture. The depth of Pitt's WR's and TE's are better than Houston and right there if not better than Atlanta.
If the value of a RB/WR/TE combo equals the QB why was Schaub a disappintm,ent last year? Because he can't stay healthy. Gotta look at the whole picture. Roeth may not be the sexy pick, but he is solid and effective. And if you want upside, as I stated before, is 32 TD's enough upside for you? Well he's done that....the other two have not, and there is a good chance they never will their entire pro careers.