Upper panel: photon index versus redshift. Black and green points are the results of Just et al. (2007) and Vignali et al. (2005) stacking analysis; the blue point is the photon index of SDSS J1030+05 (Farrah et al. 2004); the red point is our measure of the photon index of ULASJ1120+0641. In all cases, the assumed model is a simple power law. Lower panel: photon index versus Eddington ratio. The yellow area represents the correlation together with its scatter found by Risaliti et al. (2009), while the green shaded area is from Shemmer et al. (2008). The short and long dashed line are from Brightman et al. (2013) and Fanali et al. (2013), respectively. The red point shows the present measure of the photon index of ULASJ1120+0641, with the Eddington ratio estimate by De Rosa et al. (2013). The error bar is calculated accounting for the zero point uncertainty (0.55 dex) of the relation used to compute the BH mass (De Rosa et al. 2013).