How can you say that so confidently?
-- He had 240-250 touches the last 2 years in Miami, a team that was dead last in the NFL in rushing attempts at 21.5/game and he's going to Houston that was 5th in the NFL last year in rushing attempts at almost 30/game.
-- He has virtually nobody behind him to threaten touches. Tyler Ervin, a 192 lb late 4th round draft pick is his backup. Miller will get early down work, 3rd down passing work, AND goal line work.
-- Miller is 5'10, 225 lbs. He is built to handle that kind of workload at the NFL level at his size. In games last year where he had 14+ carries, he had 103 carries for 535 yards (5.2 ypc).
-- I would argue that his FLOOR is 250 touches and that I'd be surprised if he isn't close to 300. 350 is a stretch, but 250 carries, or just over 15 carries/game and 50 receptions is not only reasonable but almost expected given the team history, situation, and fact that they brought him in to be the guy.