An arrow tajgectory is the same no matter what bow you shoot (except for spped and weight vaiables). That is if your arrow speeds and weights are the same, the flight path would be the same.

Remember that when your up a tree (if you made your measurements from the ground for distance) your distance would be a bit further. But, because your not shooting parrallel to the earth, your arrow will have less gravity force on the arrow so it will hit a little high. But, again, because you measured your disatances from the ground, and because your up a tree and a little further away then your measured distance, your point of impact should be extreemly close.

This would be for normal ranges and distances (out to 30-35 yards & up 12-16feet) from the ground. The higher up your in the air and the further the distance of the shot would add more vaiables into the equation.

So basicly if you hunt normal situations and measure your distances on the ground, no need to worry about the different shot. If your measuring from the seat (range finder), then you will hit a little high with your point of impact so you will have to adjust acordingly.

Good luck.