Well the OP is not clear on what they mean by "clutch". Seems clear that total points in the SCF is considered "clutch", not necessarily those scored in specific times of game or series, so if you want to argue he isn't "clutch" in the SCF, then he is the hands down clutchest player in the other rounds.
If you want to argue your definition of clutch, then I would question the value of placing that label on someone in comparison to Crosby, who as mentioned above, has scored the most valuable playoff points of his era, and as noted in the above breakdown, context is needed when looking at his SCF point totals.