I know on the sedan G37xs, the awd comes with the standard suspension and the "S" is only for looks but no sport suspension. Does the coupe awd sport come with the true sport suspension?

 

I believe the XS has the regular suspension

 

The xS coupe suspension is the same as the x coupe suspension

 

Unlike the sedan, it seems the coupe XS gets the sport suspension:

2013 Infiniti G37 Coupe Press Overview and specifications

"Also available is the Sport Package (available on G37 Coupe Journey and G37x Coupe AWD models and standard on G37 Coupe Sport 6MT), which includes 19-inch wheels and high-performance tires, Viscous Limited-Slip Differential (VLSD), sport-tuned suspension, sport brakes, unique front fascia, sport-styled seats and steering wheel stitching, aluminum pedals and paddle shifters (automatic transmission models only)."