Why does everyone us it if it isn't OP?   just think about that, there has to be a reason why EVERYONE uses it.

So take out portable radar too, it was a stupid idea as well. But you mean to tell me that everyone uses assassin because I'm using a portable radar, or do you think that they just don't like ever having to defend a postion. 

Portable radar replaces my worthless teammates who I cannot rely on to watch my back when I solo xbl.

If I had juggernaut or stopping power I wouldn't mind anyone using assassin because my character would be stronger and since I am quicker and have a better shot than just about everyone I win 95% of the time.

I never said that assasin counters stopping power or juggernaut.  I said that with these two perks in the game it balanced out the game, it made assassin comparatively worthless.

If you played Cod 4 you would understand.