Sorry I will try to clarify.
A Radial Mask is effectively a “painted” mask like the brush and gradient masks. The shape of the radial mask and the feathering is adjusted by selecting and moving the indicator lines. You have a choice of having the mask “inside” or “outside” the radial mask giving you two masking options in one. I hope the following two images demonstrate what I mean:
Apologies for the mask colour it is user definable 
U-Points are Auto selection masks rather than “painted” masks and make their selection based on the colour/tone of the pixels under the Control Point centre spot. Currently the selection “area” is broadly restricted to a user defined circle. An improvement would be to be for the user to be able to vary the shape of the selection area.
There is a fundamental difference between a Control Point and a mask in that the Control Point is selecting pixels within an area, based on colour and tone, whereas the mask is simply a defined area in which all pixels are impacted equally (except for the feathered area) by any adjustments. With a Control Point only the selected pixels within the area are impacted by any adjustments. The image below shows a Control Point and the selection area circle which limits the area of pixels the Control Point looks at.
I hope I have clarified my post. Radial masks are now available in most mainstream image editors and the lack of radial masks in DXO is a barrier to new users switching as they have become “standard” masking tools.
When DXO introduced Clear View it was soon copied by Adobe (Dehaze) and this tool has now become a “Standard” editing tool that is found in all mainstream image editors.