Here we have a little guide on how to determine your actual ping on servers.
The Sad truth is that many people experience 200ms rather than the 20-40 experienced on dedis.
OK now the How-To
- Navigate to the folder: 'program files\steam\steamapps\common\call of duty modern warfare 2\players' and open the file config_mp.cfg
- Change scoresping_interval from 100 to 20, and maxbars from 4 to 10 (10 is the max).
- This means that each of the 10 bars represents 20ms, with full green being 20ms or lower, and 1 red being 200ms or higher.

The sad truth? You might wanna pound a few beers before you read this:
- The host is immediately obvious, he's the guy with 0-20 ping (full green).
- I usually connect with about 101-200+ms.
- Most people are connected at 200+ms (3 or less bars on normal cfg settings).
- On regular cfg settings, 4 bars means up to 0-100 ping, 3 bars 101-200, 2 bars 201-300, 1 bar is 301+.
Although with last nights update iw seem to have addressed the issue somewhat.
Eitherway the game still lacks the dedis that we all crave 7 host migrations within 1 minute lol.