Ok, so i did a quick search and found out this kid's Elite profile username.
It's "Mariniertje96". And let's just say his KDR is nowhere NEAR 5.5.
Here's the link:
You're a loser kid.
Step 1: Google: Masternuke
You should find on the first page his PS3 Battlefield 3 profile.
(Noticed a 0.8kdr in summary, hmm)
We can pull more from this, check the clan, it's "PzD"
Step 2: Log into COD Elite and search for "PzD" clans. 1 hit.
Pulled up the clan page and found it has 1 member. Haha, loser.
(Oh, awesome "team" you have there.
I suppose your other "clan members" also have a 5kdr.)
Step 3: Look at the profile for lonely clan member.
And there you have Masternoob's elite profile. Have fun.
Hmm, i think it doesn't take into previous prestige score.
I just checked mine. I'm prestige 10 lvl 6 and only have 8,947 xp.
If you go into summary it will tell you total score. He's got 4,753,005 xp which sounds about right.