Except these aren't the same Predators, That is the point. And most of the humans DID die. There were two survivors in Predator (Arnie and the female guerilla), two in Predator 2 (Danny Glover and the female cop), and two in Predators (Royce and Isabel). And Hell, 2/3 of the Predators killed in that movie were done in by the humans essentially Kamikizing themselves, and the third was only killed by Royce using very similar tactics to Arnie in the first film, AND getting shot in the back by a sniper rifle at pretty close range, AFTER getting blown up by claymore mines, AND then literally getting chopped to pieces.
And Arnie's team wasn't prepared for them, whereas Royce started to figure things out rather quickly. And cops simply aren't really trained/equipped for this sort of thing, so a Predator being able to cut through them is no surprise, especially since THEY weren't expecting it either.
First, I think you're being a little too defensive. I never said that
Predators was a BAD movie. In fact, I really quite enjoy it and feel it was a step in the right direction (far, FAR away from those God-awful AVP movies). But the Preds in that movie, in comparison to the first two installments, were WIMPS.
One Predator, ONE, all alone and with no hunting dogs or robotic falcons, took out Arnie's ENTIRE TEAM of heavily armed and highly trained commandos. Not a group of haphazardly thrown together individuals, but a TEAM. And Arnie and Billy figured out quite early that they were being hunted. They didn't know by WHAT, but they knew they were being hunted. Even when they figured out that what was after them was otherworldly and prepared for it, it took out all of the rest of his team SINGLE HANDED (and very quickly too). Just One, all by himself. No dogs. No backup. Just him.
In Part 2, ONE Predator, all alone and with no hunting dogs or robot falcons, took out NOT ONLY an entire TEAM of specialized police officers (you seem to forget that Danny Glover was the head of an anti narcotics task force, and that 1997 Los Angeles was depicted as a virtual war zone), but ALSO an ENTIRE TEAM of special agents who were in LA for the SPECIFIC purpose of capturing the Pred, once again SINGLE HANDED (plus two whole gangs of drug dealers, who were even better armed than the cops). Again, just ONE, all by HIMSELF. There were other Predators there in LA, but they stayed out of the hunt. And when Danny Glover killed the Predator that was doing all the killing, they let him go with an antique flintlock pistol as a trophy.
Now in
Predators, we don't have a TEAM of commandos, or even a TEAM of cops. What we have is a ragtag group of killers, haphazardly thrown together, to face NOT ONE, NOT TWO, but a TEAM of THREE Predators. And not JUST Predators, but SUPER PREDATORS. As in SUPERIOR to the REGULAR Predators seen in the first two films. And THESE Predators also have their hunting dogs and robot falcons with them. Yet this ragtag bunch of killers, who distrust, dislike, and in some cases downright despise one another, somehow manage to defeat ALL THREE OF THEM? The entire f**king GROUP should have been killed in the Predators' campsite! Remember the first movie? When Billy was deducing what happened to that other TEAM of commandos that went after the guerillas before Dutch and his team did? They were standing back to back, panicked, shooting in all directions, and THAT ONE SINGLE PREDATOR wiped them ALL out! ONE! And you're telling me that a TEAM of THREE Predators couldn't get the same result when ambushing a ragtag group of randomly chosen killers? And this DOESN'T make them a bunch of total pansies?
You seriously need to go back and rewatch ALL THREE movies. And pay close attention to every detail. I think you might start to see things a little different.