Comparison of contrast curves obtained through our method with respect to end-to-end simulations. The comparison has been made for 1 h exposures with respect to several cases: (top left panel) H-band HARMONI observation mode (Table 1) with an A-star (7200 K, log(g) = 4, [M/H] = 0) magnitude of 6 with T-type planet (500 K, log(g) = 4, [M/H] = 0) and L-type planet (1700 K, log(g) = 4, [M/H] = 0) with median seeing condition (0.65″ for λ = 0.5 µm, Strehl = 94%). Top-right panel: same templates and conditions on K-band HARMONI observation mode. Bottom-right panel: same templates on H-band with JQ3 seeing condition (0.74″ for λ = 0.5 µm, Strehl = 73%). Bottom-left panel: same planetary templates but with an M-star (3200 K, log(g) = 4, [M/H] = 0) on K-band with median seeing condition. The solid lines are the prediction of FastCurves with these parameters, the dashed lines are the result of molecular mapping processing with time-series simulated PSF and fake planets injection.