FoMoCo has the 2015 Performance Package, his 2013 did not. The Flex has the same componentry as the non-Performance Package SHO.
How do the differences look (for 2010-12 anyway)? See the attachment in bpd's post here:
http://www.ecoboostperformanceforum.com/index.php/topic,522.msg3161.html#msg3161SHO Performance Package
$1,300
Enhance the performance of your SHO with the available SHO Performance Package. It features:
• Upgraded performance brake pads
• Sport-calibrated electric power-assisted steering (EPAS)
• Higher-rated springs, tuned shocks, stiffer stabilizer bars and rear suspension to provide a more connected feel between the driver and the road
• Standard AdvanceTrac® electronic stability control (ESC) features a "Track Mode/True Off" setting that delivers a more spirited driving experience
• 3.16 final drive ratio for off-the-line acceleration
• 20" machined and painted wheels with performance summer tires*
• New larger front and rear brake rotors
• Upgraded cooling pack
• Tire mobility kit (in lieu of spare tire)
• Alcantara® suede-wrapped steering wheel
*Ford does not recommend using summer tires when temperatures drop to approximately 40°F or below (depending on tire wear and environmental conditions) or in snow/ice conditions. If the vehicle must be driven in these conditions, Ford recommends using all-season or snow tires.