Why are the old alien comics generally better written than the old predator comics, what is it that makes the xenomorph concept more interesting for writers?
Because there's multiple ways you can make new forms of xenomorph and put a new spin on the xenomorph concept by making it come from an alien species, or an experiment, etc etc.Predator will always just be the same and only so many ways you can do apex hunter stalking prey in the far future, or modern day, because there's only so many ways you can come up with how the Predator gets beaten without it becoming formulaic. Predator stories have always been more fun when they're period pieces.