Travis did not lose his job because of injury. He lost his job because he failed. Two examples - Oakland, tripped on the goal line. New England - 3rd down before the Bledsoe botched bootleg, he tripped again when there was a huge hole. Henry continuously showed he was not capable of blocking. Henry is definately a step below Willis. He is capable, but does not have the potential to be a superstar.
Last year people were unsure how Willis would perform. We know now that he is better.
BTW, I thought this issue was over months ago?