I searched for the topic and didn't really see direct side by side comparisons so I thought I would weigh-in. First about me. I am 60 years old and an 8hc. I have never been a traditional wedge fan and quickly got on board the original CBX train a few years ago. I liked them but didn't love them. I was used to playing iron set wedges and felt that while the CBX were certainly more versatile around the greens, they lacked the full shot consistency of an iron set wedge. When CBX2 came out I quickly jumped on them and thought hey had improved the full shot consistency by changing the sole grind on the 54, but they still were not exactly what I wanted. Then I saw the new Callaway Mack Daddy CBs online and rushed to my local shop and had them order a 54 and 58 for me sight unseen except for online. Being a Callaway iron user and developed by Callaway and Roger Cleveland I thought, CAN'T MISS!! Keep reading....
Much more iron set like than the CBX2 except for the full face grooves which I actually like. They are slightly smaller than the CBX2, though you would need to really study them side by side. The MDCBs have a nice wide sole. I much more preferred the sole grind on the MDCBs. They must be chunk proof, right? Read on...
About the same. Not iron like but also not bladed wedge like either. Somewhere in between and I can live with that.
Spin MDCBs spin a ton. Crisp chips grab like the balls have glue on them. Full shots are pretty close to the same though the CBXs launch slightly higher for me. Now, about my previous comment of chunk proof for the MDCBs. Anything but!! The MDCBs leading edge sits closer to the ground(as advertised) to promote versatility. But it sits so low that it slices into the turf totally negating the wide sole. Some will say its my technique and they may be right to a certain degree but I was carving up beaver pelts with the MDCBs and no where near that with the CBX2s. Some who take normal divots may like that but for me it is a huge fail. Around the greens was about the same. I really had to focus on technique to make sure I didn't decelerate even a little as there was no room for error. Considering who these wedges are for, that again is a huge miss.
Needless to say, I am selling the MDCBs and staying with the CBXs until the next great wedge comes out and I'll do it all over again. In the meantime, please ask questions. I am happy to answer.