Lynch or addai for week 13?

Both Lynch and Addai have been playing well over the last few weeks. While Cleveland is giving up about 42 yds/g on the ground more than the 49ers - they have only given up one more rushing TD. The Colts are still dead last in the NFL as a rushing offense and average only 79 yds/g on the ground as a team. In addition, they lost their starting center again for up to a month. Given that and the fact that the Bills are at home and the Colts are on the road - I'd go with Lynch.