i got video to point out a few things.
http://www.youtube.com/watch?v=2NS1uZWwdh0

1st is your opening routes. you guys hesitate from jump. chief you got a kill but camped a little. lach, you looked lost and got killed. you should have went under the bridge or pushed forward. my route is the same i always run. notice how i ADS a lot, checking for enemies. i see none so i go through the cave since i know that's a main spawn point. i get 3 kills.

next is you guys putting yourself in bad spots. chief, you turned your back to the enemy spawn and 4 guys rushed you. you should have use the jeep as cover. lach, you are open to get shot from 5 directions. when i kill the guy on the bridge i leave the tag because the enemy spawns there. i call in the predator for a triple.

fallen:
http://www.youtube.com/watch?v=Tn-2oTvGmXU

another good opening route. i pick up an easy reaper in one spot. our team was sitting back so i did too. chief, you were away from the action. stop laying prone in odd places.

you both need to be more decisive. i can't tell what you're doing when i watch you.

try this out:
http://www.youtube.com/watch?v=sYcRN3XOMpM