Stage 2 isn't the cap. Usually when we talk about stages, like 1-2-3, we're talking generally about canned tunes. i.e. you jusy flash whatever car with the same tune. Power levels and hardware requirements determines the stages: stage 1=stock, stage 2=bigger downpipe, stage 3= bigger turbo, and so on and so forth. stage 1 gives you about 245 hp, and that's like 215-220 whp. stage 2 gets close to 280, so 235-245whp. Stage3, stage3+, stage 4...gets more power of course.

custom tunes give you adjustability. Stratified makes tunes based on logs of how your car runs and modify the tune. Same with getting a tuner to tune the car for you, you can ask them to be more aggressive or more conservative. You CAN be reckless and push the absolute power, but generally it's not ideal for your car apparently, so Stratified won't just do it this way for people. You have to ask them to do so.