I wouldn't necessarily say that the Non-PP offers less performance.
There has been no definitive distinctions in the gear ratio differences (2.77 for the Non-PP, versus the 3.16 for the PP pkg) as it relates to overall performance.
Bar none, the biggest differences between the two pkg's (at least for 2013 model years, and beyond) is that the PP pkg option includes all the auxiliary coolers for the trans, the oil, and the ptu.
Adding those, allows you essentially to have a true, track ready car. As FMC has so touted.
The additional differences beyond the above, are the better brake pads, & slightly better suspension. Those are the biggest differences.
But as the 1st person to retro-fit the auxiliary coolers onto a Non-PP pkg SHO (of which, the changes are easily performed) I can attest that the differences then become neglible.
Some of us 2010-2012 owners (both Non-PP & PP) have shown on the track, that there are no differences in performance between the two.
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