According to the available data Misbah ul Haq crossed Virat Kohli’s 1268 runs in a calender year in his 31 matches.
Indian player Kohli is on 1268 in 34 matches with 115 (not out) highest.
Here is the list of Top Ren leading scorers of the year 2013:
Misbah ul Haq
AB de Villiers