Speaking of the FR-S... man, what an overrated car.
2013 Subaru BRZ vs 2012 Honda Civic Si HFP : Car Reviews
But more relevant to what you asked: Tires mean a lot. The grip they provide can impact acceleration, braking, and handling (and depending on the tire, can also impact ride). Tires are often a limiting factor with a lot of cars, especially when people buy cheap replacements.