That didnt make any sense at all whatsoever.
Let me give you an example:
I joined a server, said it had a ping of 63. Joined it, had like 190-220, very unplayable. Joined another game that had low ping, like 70something, was at 160 ping, still unplayable.
It is things like that. My connection isnt perfect, but i have no more than 70ms to anywhere in the US (aside from alaska // hawaii). Then there are just so many more crap servers out that that you have no idea what is going on inside of them.
Also, for the record, just started playing COD4 seriously in the past week, MARTYRDOM B L O W S