Sco Vs Nato

If there ever was to be a war between SCO and Nato who do you think would of won and why? Without the use of nuclear and chemical weapons





SCO: Founded in 2001 (Shanghai five, founded in 1996)http://en.wikipedia.org/wiki/Shanghai_Cooperation_Organisation
Member States: China,
Kazakhstan ,Kyrgyzstan, Russia, Tajikistan and Uzbekistan.
Observer States:
India
Iran
Mongolia
Pakistan

NATO: Founded 1949
http://en.wikipedia.org/wiki/NATO
North Atlantic Treaty Organization or NATO is a military alliance comprising of 28 members: Albania, Belgium, Bulgaria, Canada , Croatia Czech Republic, Denmark , Estonia, France,Germany, Greece , Hungary, Icelanda, Italy , Latvia
Lithuania ,Luxembourg ,Netherlands ,Norway ,Poland , Portugal , Romania , Slovakia ,Slovenia, Spain ,Turkey, UK and USA