Yesterday during some SQDM i took the time to do some research :0
To understand the camping sniper, one must become a camping sniper - so I hunted around for some cover, be it the top of a building or atop a tall tree. Great I thought, lets sort this out. 5 minutes in and I'd not seen a soul....hmmm. Another 2 minutes and I had my first kill. Another 3 minutes and along came my second victim. 3-0 KDR awesome. Meanwhile my teammates had clocked up 10-12 kills and I was quickly getting bored. I gave up and started doing a m24 run around - much better although I did die a few more times! Still, I now understand the camping sniper - they're in it for the KDR and not for any sort of fun what-so-ever!