Is there a direct comparison between Nippon shafts and Titleist branded Nippon shafts? For instance, is the Titleist Nippon 970 the same as the Nippon 950 GH or is the 1050 GH the same as the 105T. I'm asking because there is so much more on-line information on the "normal" Nippon ones than the Titleist ones regarding playabilty/players's feedback etc.
Many thanks.