Ultimately i will bet you that it wil be a dps loss. The thing is that you should ALWAYS have enough rage for a BT -> WW -> SLAM - rotation. Heroic strike is for burning the excess rage.
You will at some point find yourself in situations where you have low rage and just enough for BT and the next ability(WW/Slam) but not enough for a heroic strike (until AFTER next swing/free rage income). So i that situation your macro would use all your rage for BT and a HS(on next swing) and you end up rage starved and unable to use WW/SLAM as soon you otherwise possibly could, which would lead to a overall dps loss.
In other words - you should always be in a position, where you have the possibilty to decide NOT to use HS in order to avoid ragestarvation.
My advice - dont macro HS to your primary rotational abilities. Keep it seperate and use/spam it when you have 50+ rage.