I'm less worries about the boost numbers than I am about the performance outcome. I could care less about bragging about "my car does xxx, or pulls yyy." For me its all about the feel behind the wheel.
Got this from another forum. The earlier start and steeper torque curve is what drew my eye towards stage 1. It shows a 65ft/lb increase in torque over the stock tune. Does this seem unrealistic with no other mods? According to the OP everything else on the car was stock and the run was at 16psi so certainly not dangerously high boost. Here's the link to the whole thread on nasioc:
Dyno Tune: Stock 2011 WRX Stage 1 - NASIOC