But at least Hawkman has a mace. In lot of these old X-Men stories, Warren just flies around punching people.
Though you could argue about their relative ineffectualness vis-a-vie their teams. The X-Men have stuff like a telepath, a guy who shoots optic blasts, a guy with superhuman strength and agility. Not too shabby, but not the be-all and end-all of superheroes either.
The JLA has a guy who can travel at the speed of light, a man who can push the world out of orbit, a woman who can push the world out of orbit with slightly more effort and has an invisible jet. So there are circumstances where Angel could come in handy to the X-Men, whereas anything Hawkman can do is generally covered by Green Lantern thinking hard. :)