The image quality and detail level, presumably from the RAW decoder, is pretty poor compared to Lightroom, CaptureOne etc. The last time I gave it a try was about a year ago though.
To me it seems that Lightroom makes it much easier for users to get a decent quality due to a much better polished user interface and sane presets. You should be able to obtain the same quality with both programs but it takes oh-so-much work to get gradients, color, detail, denoise into the right balance.
