Ah, this is rather a different question to the original one
Featuring in the title is an old MusicBrainz style guideline, since Musicbrainz NGS introduction of artist credits the featuring artists should be moved to the artist artist credit field and out of the title field. So you could fix the songs in Musicbrainz site that will remove the inconosistency between the two, but clearly that is a time consuming task.
Two preferences that you should change are:
Remote Correct:Format:Use Artist Name instead of Artist Credit Name
and
Remote Correct:Format:Use recording Artist instead of Track Artist
these will partly fix the problem.
Use Artist Name instead of Artist Credit Name, means that if an artist is usually known by a particular name but uses a different name on this release then we use his usual name. This helps standardise things but doesn’t remove the featured artist it just means they will also use their normal name.
Use Recording Artist instead of Track Artist means that if this track is available on multiple releases we use the name of the artist it is credited to rather than any variation used on this particular album. Sometimes this can effect who is credited, if they were not credited originally but where credited later on.
You could use Edit/Find Replace to find and replace values in any column but at the moment this doesn’t does support regular expressions which make things more diifficult.
Actually what you could do is the following
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Make the Artists column visible. This stores each artist credited on a song as a separate value so you only see the first artist in the main edit table (the others are visible by clicking on the small box) and the first artist should always be the main one, whihc is the one you want.
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So drag the artists column next to the artist column then just copy the value from artists column to the artist column using Empty Column on the artist column (right click on column header) and then select rows in both columns and use Prepend to Left to copy from artists field to corresponding artist field.
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Now you’ve done lost all your featured artists , you are just left with fixing the titles that are still using the old method.