DR7 mass estimates and anomalies:

DR7 mass is estimated the same way as DR3. However, there are some anomalies in DR7. The Shen et al. 2010 versus R&H 2011 mass-mass plot shows an island on the side of the plot. This island shows very massive BHs estimates in R&H 2011. Such massive estimates could either due very broad MgII or very luminous objects or it could be only an error due mis-measurement in sigma_line.

I have tested some of the most massive objects in this island. As we have expected, the pseudo-continuum is not estimated correctly in these objects and so as a direct results the sigma is much larger than true value. Here are some examples:

So these objects must be re-analyzed before reporting their masses or they can be cut from the list for now.

I have also compared the FWHM from Shen et al 2010 and sigma_line from R&H DR7. The anomaly is due measurements of sigma_line and not the luminosity. As you have guessed, the pseudo-continuum is a moderately low.