What I like about Sam:
Much more mobile and a big run threat at QB. He can get yards on his own on the ground, he's fast, shifty fast and he's good at it.
Gunslinger mentality like Farve, Jake Delhomme. It's all or nothing baby. He's more Farve than Jake with his arm strength though.
6'3", Good height for a QB, solid build.
Best case: Brett Farvre
Worst case: Jake Delhomme
Thus, I don't see him being this teams downfall.