Scion FRS concept
I think that the Scion FRS looks more aggressive than it’s cousin car from Subaru, the BRZ. The Scion has the same side view mirror pods with cameras in them, but they are more sculpted on this car. Also, the glass was not completely blocked, enabling you to see in the car a bit.
Overall I’m guessing that the Subaru will be better handling, and the Scion will be more stylish.
This photo is from the 2011 LA Auto Show.