I'll trust my judgement over magizines that want to sell advertising since magazine sales are so poor.
The PP is an aggressive street car. I can improve a Camaro I can improve a Mustang for the track. I wouldn't buy either car and expect them to be track ready.
2010 GTRR in 5.0 Magazine [http://www.mustangandfords.com/featured-vehicles/m5lp-1212-2010-ford-mustang-gt-rr-total-fabrication/viewall.html]
2015 White SC, PP, etc....