The BRZ/FRS were developed by Toyota and Subaru in a joint venture. They are pretty much the same car, the only difference is in the handling (oversteer vs understeer)
http://www.caranddriver.com/features...re?redirect=no
To answer the original question, I don't see these cars in the same category as the Z. The FRS/BRZ have 200hp and were built to be great handling cars, I see them being more in the Miata and s2000 realm.