There is no comparison here; the high marker class of the axe decides the thread: the axe in every possible aspect. It's more reliable by far especially since we are talking about the G series of DP markers.
I have 5 axes, 1 empire mini and a G5. I like axes, but I am not going to put down the G5. It is my main gun right now, with zero problems. Does the axe shoot better then the G5? No. The Axe, does shoot smoother and quiter. The G5 is allot lighter then the Axe or the Empire Mini. The 5 axes, 1 empire mini and a G5 has given me zero problems, so any one of them is good to go. Just pick the one you like.