The way I see it is this, the xenomorph is canonically supposed to be bigger, faster, more agile and stronger than your average Pred. Yeah, a predator can lift Arny with one hand, but a xenomorph can pick you up, crawl up walls and run around with you and haul your ass back to the hive. As much as I like the AVP portion of the two licenses, most AVP stories end up simplifying both creatures to make them a simple match-up. Xenos being squishy, quick and nimble and Preds being lumbering muscle machines. Neither of these descriptions really fit the original creatures. Honestly, I feel like Preds and Xenos are pretty similar and equal to each other in their original imaginations, so anyone taking on the AVP IP has to simplify them to try and make them feel different and interesting.