It's a good guide, but you say getting TVed is rarely done against a little bird. You said you should have no fear going up against them. That's kind of misleading to tell people, because a good gunner will win most of the time. That doesn't mean a good gunner won't miss 2-3 shots sometimes. Actually, I don't even think it's right to say a "good" gunner, because I think to consistently hit a small bird you've got to be more than just good. They are probably the hardest thing to hit in the game. If it's a up close and personal battle, my money will be on the little bird. Anything over roughly 75m and I give it to the chopper if it's a very good pilot/gunner combo. However, in very close range the pilots rockets can make quick work of the little birds.
Usually when I am using my cannon at the little birds, I am not trying to kill the chopper, I am aiming for the passengers. For things with such little armor, they sure can take cannon fire from the chopper.
A little birds best defense and offense against an attack chopper is being sneaky. Unless the people the in choppers are complete morons, they've still got more weapons to attack with and that poses a huge threat against the little birds.
Like I said, good guide, I just think you should have given more credit to the attack choppers power vs. a little bird.