To drag up this old question ...
I've been comparing Capture One and DxO PhotoLab, and I thought just for fun I'll run the same images through Studio. Lo and behold, in my eyes the images are better in Studio - cleaner edges, nicer contrast. I've tried to keep the parameters as vanill as possible but that is my conclusion. Of course the Studio user interface is dire, but maybe it's worth persevering a bit to see if there is genuinely an advantage.