[pbh]

Actually, I thought his comment was quite delicate.

I used to think that DB comparisons were bad because of vested interests, like Oracle refusing to allow anyone to benchmark them. But I now think that Antirez's view is much closer to the truth: poorly informed people can't set up benchmarks correctly because they don't understand the underlying DB model and possible optimizations, and well informed people can't set up benchmarks because they can't think of a fair benchmark that doesn't explicitly handicap one model or set of optimizations versus the other.

(Of course, in this case, the comparison is pretty bad. Other commenters have noted that an inverted index is more sensible here and that Postgres' text search support should have been used. But the big issue to me is that the graphs are incredibly misleading, with totally different units on the y axis, so that a 0.004 second win for Mongo looks like as big a win as a 3 second win for PG.)