In relation to Steven Soderbergh, I've seen a dozen of his movies, with an average score of 59.17, which is not great. If I look at those directors where I have seen at least 10 of their movies, then this places Soderbergh in 20th position (out of 26), between Mike Nichols and David Cronenberg. But unlike either Nichols or Cronenberg, I have seen no Soderbergh movies that I would place in my top tier.
I have seen no masterpieces by this director, nor even any movies I would call great, and in fact I have not given him a score higher than 70 (the tier 7 movies are as follows: a score of 70 for Sex, Lies, and Videotape, Solaris, and Che: Part One; a score of 65 for The Informant!, Che: Part Two, The Girlfriend Experience and Out of Sight). So there is perhaps little reason to consider him a great director.
That said, Soderbergh is one of those directors who seems to want to play a particular kind of Hollywood game, shifting between calculatedly commercial projects and other, more personal, smaller-scale projects. My feeling is that he is a director who likes to experiment at technical, aesthetic, and thematic levels, and is thus a somewhat interesting director, even though none of his experiments is entirely successful. For that reason I probably look forward to seeing his movies more than some other directors, even though I don't really have enormous expectations.