Comparison of the energy radiated from Novikov-Thorne and Shakura-Sunyaev disks. The solid lines correspond to the radiative efficiency given by the analytic counterpart of the kerrbb model as observed for different disk inclinations and black hole spin values (Campitiello et al. 2018 is referred to as C18). The dashed purple line showcases the angular dependence according to the Shakura-Sunyaev model for a static black hole, neglecting all relativistic contributions. The colored dotted lines for each spin value depict the respective theoretical predictions of Novikov & Thorne (1973). For comparison, the respective black and dotted orange lines represent the Kerr PN treatment of this work.