My guess is that they have some features in common, they have some differences too, but actually they are almost the same quality level.
Are there reason to say one is better than the other or is most of all a matter of personal taste and needs?
closed as not constructive by mattdm, MikeW, Paul Cezanne, John Cavan♦ Apr 11 '13 at 2:47
As it currently stands, this question is not a good fit for our Q&A format. We expect answers to be supported by facts, references, or expertise, but this question will likely solicit debate, arguments, polling, or extended discussion. If you feel that this question can be improved and possibly reopened, visit the help center for guidance.If this question can be reworded to fit the rules in the help center, please edit the question.
I would say that they are different. Lightroom offers more bang for the buck, better detail and contrast, and better workflow, but there are situations where DxO shines. This review summarizes it well.