In a sense, CX DM is much more difficult to achieve than AA EXP. In addition, there is no tier AM bonus. There are CX GO who flew >100K miles in a year. If on AA, the person would have been AA EXP. (Persoanlly, I know I will fly more than 100K miles this year, but I am not sure about 120K. I may drop back to GO again. Several years ago, when I was a SL, I flew about 59K miles one membership year but I missed the GO qualification. On AA, I would already be a Plat.)

CX DM/GO does have many benefits that other OW elite members do not have. I am also glad that the op-up priority for GO is higher than OW EM, especially because I am not sure whether I can still be DM next year.

I think the benefits CX is offering OW EM/SA are fine. Some are OW requirements, and some are just nice gestures (priority baggage) that are not in expense of CX own members.