Certainly an unbiased source (groan).Unlike the other example from the MS partner? ;-)
Though my Oracle administrative experience is limited, it is by choice since Oracle is such an unmitigated pain in the a$$ to work with.Certainly Oracle is less accessible coming from the Win camp. But the critique makes a good point that some SQL Server databases could be kept in Excel and should not be aggregated to compare with your average Oracle database.
A cynic might also observe that Oracle sells its databases to those who intend to use them- IOW no bundling into BackOffice or small business editions of operating systems.
"... They ne'er cared for us
yet: suffer us to famish, and their store-houses
crammed with grain; make edicts for usury, to
support usurers; repeal daily any wholesome act
established against the rich, and provide more
piercing statutes daily, to chain up and restrain
the poor. If the wars eat us not up, they will; and
there's all the love they bear us."
-- Shakespeare: Coriolanus, Act 1, scene 1