-I'm not sure that the Flex is "me too"......I haven't seen anything out there that with the same design rationale or instrumentation.
-The PerFORM glenoid may be similar, but with less bone loss due to matching the glenoid curvature resulting in less glenoid reaming
-RVD baseplate helps to prevent glenoid bone loss compared to Biomet's enormous post/screw...
-haven't seen the screw in baseplate that you're speaking of that would copy the DJO design
-PerFORM glenoid allows for positioning away from current glenoid wear....
-Plenty of reasons for a doc to go back to Tornier based on the Flex's design - bone sparing glenoid component, bone sparing humeral component, and a sales rep that actually knows about shoulder replacement vs. a knee/hip rep who moonlights as a shoulder specialist.
I don't care either way, I have just seen the new design and how it stacks up against the competition. I think the other companies are screwed if Tornier can get back to what it does best.....Shoulders!