Comparison of independent redshift measurements and classification of 558 galaxies in VVDS-Wide and in the VIPERS survey (Guzzo et al. 2013). The comparison is made for each of the 4 categories of spectra in the VVDS: flags 1, 2, 3 and 4, and 9. The probability for the redshift of each class of galaxy is computed as the fraction of galaxies which agree between VVDS and VIPERS to |dz|≤ 0.0025 × (1 + z), and is indicated in the upper left corner of each panel, using as a reference the most reliable redshift flags from the VIPERS survey (the small histogram inset in each panel shows the VIPERS flag distribution). Using only the most reliable flags, the sigma of the redshift difference between VVDS and VIPERS redshift measurements normalized to the expansion factor (1 + z) is σ_dz = 0.00072 which translates to an individual redshift measurement uncertainty of σ_v = 202 km s^-1.