Well, me not being a very decent FPS gamer in the first place, I find the only way to get kills close to deaths is for me to camp and hide, but my friend who actually owns it doesn't need to camp and crap. And if you find yourself getting killed over and over by killstreak rewards, that's a sign that either your team sucks balls, or the opponent team is wiping the floor with your team (assuming you are on teams).
We play mercenary team deathmatch for the most part, and the only time I've seen my friend get killed over and over by killstreak rewards is when he's on a stupid small team, or there's someone on the other team that is completely wiping his team single handedly.
But I've never seen a time where someone who is actually skilled at the game is actually required to simply camp the whole game due to killstreak rewards... I mean, the choppers ARE killable. In fact, they are pretty easy to take out.