Yes, Torx points are sharper than Torx +. You can use a torx+ in a torx but because of the shape you have to use one size smaller (usually) and that's why they strip.
Sure would have been nice to have you around I don't know how many torx bits I sent back to snap-on.
Mac tools hasn't been around in years I think 2001 was the last truck Iv'e seen around here.