You can't queue a skill if it's in a macro, which is going to cause your dps to be lower than if your skills were not in a macro, and in the specific case for war, will very highly likely make you unable to fit in 9 hits during berserk. I tried this out with only having one macro that combines inner beast and fell cleave into one button (seemed convenient so I gave it a shot), and the delay caused by that alone made it nearly impossible to do a 9 hit berserk on a test dummy, so you could forget that ever happening in actual content.