Dyno sheet peak hp numbers are useless to base information on when deciding your pipes. There are so many variables that can decide what pipe works best where. Modifications to your bike play a large role in this. Dyno sheets will show you the basic power curve of a pipe, but modifications to your bike can change this curve. You also need to pick a pipe that works with your mods, but the pipe may hamper your performance if you dont choose wisely.
So you need to tell us any performance stuff done to the bike, where you ride mostly, and what you would like the bike to run like.