Here's what I think. Chicken wire is not garunteed to keep anything out, nor would I expect it to. I imagine it would be fairly easy for a racoon to find a way in if it wanted it bad enough, however a rooster kicking through chicken wire is a little far fetched. A raccoon is not stronger than a person, but it's next meal depends on if it gets into that pen, so after a few hours it can probably find some way in. I actually have chicken wire around my pen, because when we built it we were new to chickens and weren't thinking about predators. We have two labs with a huge prey drive though and they scare away chicken predators, making it not a problem for us to have chicken wire. The labs themselves would rip apart a chicken if they could, but since it isn't neccasary for them to kill if they want to eat they don't try going through the chicken wire. Anyone who reports having huge success with chicken wire is either lucky or has some other factor(such as my dogs) that keep away predators. We are planning on replacing the chicken wire with something more sturdy soon. So, in conclusion:
1) chicken wire is not going to keep out predators, most animals can find a way in, however a rooster breaking chicken wire is not a big concern
2) anyone with chicken wire who has success with chicken wire has some kind of factor that if removed would result in predators getting in
3) a predator is very determined to get in and although after a few seconds during a test run a person may not be able to tear through it, a predator who takes the whole night can get in
Sorry if I sounded stand offish but that's just what I thought. Hope this helps someone.