Is something OP when the only counter to it is high skill level play? is it op when there isnt a piece of gear, perk, or build that can counter it? is it op when it performs outside its traditional established game play? is it op when a lot of people are using it? is it op when a lot of people start using it to counter its users? is it op when it performs better than other options within the same class, weapons or gear? is it op when it has more effects than its counter parts? edit: people who down vote someone asking simple questions have a guilty conscience about something they use.