EDIT: blizzard deleted his comment so now i wrote more and will probably stop
I will
When it came to losing the predators had to find the dead bodies and or any preds being autopsied on. that gave away what they are and their technology not that they are such a secluded species but they are smart and know humans can adapt to their technology like a pred can adapt to them. seeing how in predators the main human (sorry i forget names fast) tried the arnold technique by covering himself in mud. but he saw through it eventually. but as you can see they watch over the human race probably because they fear them. They see how they act and work even if they got superior tech humans can still find a way around.
as reckless as they are they can ruin shit for the predators if they get their tech. but even so a human can kill them with such primitive tech as well so if they get ahold of theirs theres no telling what they can do but at the same time easily can wipe them out.
so we go back to the bulky and thin types, see now not all of them had the same tech as each other i dont think they have a series of helmets you can buy like apple does with their phones, you probably have to install certain tech and what you might need. so more armor for a queen that can rip you in half. in times of war against aliens they have divisions probably within large clans or would join clans together, they arent small groups as you see in the movies.
Large preds in high tech armor could fight giant aliens and knock down waves, smaller ones were more Ops that work smaller deals like assassinating and what not. And dont get me wrong i dont think any of them would give up their cloak, it helps hide their bodies if they cant kill themselves. and or conceal themselves so they can study and watch over the humans. its not always about killing either mostly they had to round up these people in some time so their is prep and then theirs hey we got a situation go face it now. which came down to things being different, not being able to hunt like they would of the first pred.
The moves took place during proving rites, missions and or research and or just great sport. so each had their own mood and setting.
They respect aliens with such honor is because they are a swarm, a never ending killing spree and as spoke were unmerciful challenge that never gave second chances to anyone. aliens dont need tech to kill, they are just able to do so with their biology. They have no thought process to get smart and use lasers like humans. but i do know they dont want their species be perverted with alien biology so they will destroy anything that may mock what they are. honorable or not they have this apex thing i was talking about, they feel like they are gods and want to keep it that way and kill off anything that may prove they are weak. So honorable species is what you see.