I had the misfortune of pulling Marshall Faulk out of the BND Super Bowl Frenzy pack, and decided I'd give him a fair shake since he is generally a good card and people like the card. I have to say it was disappointing overall, I was able to run the ball with him and it was nice to occasionally be able to get lucky and just turn through a gap and get away for a TD, but he just did not have the fortitude to battle tough run defenses. He seems like a card that would be great vs bad or medium run defenses, but when it comes to facing actual competition he just isn't as tough, I have had a similar experience when playing against the card so this did not surprise me.
T'vondre definitely stays on top after this one, what you lack in the ability to speed boost for an occasional fluke TD you more than make up for by being able to run against any defense regardless of how tough it is. You can always break it down and consistently get to the end zone.