What I mean is that Ford developed a host of features exclusive only to those models. The Focus RS' high output Ecoboost and trick AWD system with a drift mode, or the GT350's flat-plane crank V8 and carbon fiber wheels, or the GT500s supercharged, cross-plane crank version of that engine and dual-clutch transmission. On the trucks, it's the new Raptor's coil-sprung rear end and factory 37" tires. Before the GT350 flat-plane cranks were ONLY on European exotic cars, and frankly it still is only used on supercars. The GT500 and the GTD are the only muscle cars I know with dual-clutch transmissions, a choice that caught me VERY off guard when it came out because the 10-speed is good enough as is. Before the Raptor and Braptor coil-sprung rear axles and 37" tires were unique to aftermarket builds. Ford introduced frankly exotic, highly advanced features to these cars only for these cars.

Whereas, for a while GM would just take an LS platform, supercharge it or increase it's displacement, and slap that in everything. While the LT4 is a perfectly good engine, and LS7 was actually pretty special, with it's dry sump and 7k redline, they shared these engines around between a number of vehicles, which is perfectly fine, it just made their vehicles seem just a little bit less "special".

Only recently has GM been adding on notable, exclusive features to their high performance vehicles, like the LT6 in the Z06, the LT7 in the ZR1, the 4.2 Blackwing in the CT6-V, the Corvette's dual clutch transmission, the E-Ray's E-AWD, the ZR2 model's Multimatic dampers and f/r lockers, the Bison models AEV armor from the factory, etc. etc.

It's these things that make me appreciate the effort involved in these performance cars.