Light curve width-luminosity relation for a series of models with differing C depletion in the core, but otherwise identical parameters (in black: models rpc32_DDT8_N100, rpc40_DDT8_N100, and c50_DDT8_N100 with increasing B_max in this order) as well as for the N100 model of Seitenzahl et al. (2013, in gold). The dots and the square denote angle-averaged values, pale crosses denote values for different lines of sight. The green crosses show observed supernovae from the CfA sample (Hicken et al. 2009).