If you want an answer to this question then look up statistics as that is the only way you could logically predict the outcome of a conflict. However like Parsat has said so many other factors come into play that it impossible to make an informed descision.
Here are some stats i found off google on this website
http://www.globalfirepower.com/country_detail.asp?country_id=4
China
Military Manpower: 667,657,509
Personnel Fit for Military Service: 550,265,789
Available Yearly Military Manpower: 25,848,582
Purchasing Power: $7,099,000,000,000
Gold Reserves: $1,534,000,000,000
Oil Production: 3,710,000 (barrels/day)
Oil Consumption: 7,000,000 (barrels/day)
Proven Oil Reserves: 16,300,000 (barrels)
Labor Force: 803,300,000
Ports: 8
Airports: 467
Railways: 75,438 km
Waterways: 124,000 km
Roadways: 1,870,661 km
Land Area: 9,596,960 km
Merchant Marines: 1775
To keep the statistics consistent, here are some mmore from the same source website:
http://www.globalfirepower.com/country_detail.asp?country_id=3
Military Manpower: 71,233,475
Personnel Fit for Military Service: 50,105,672
Available Yearly Military Manpower: 2,530,333
Purchasing Power: $2,097,000,000,000
Gold Reserves: $476,400,000,000
Oil Production: 9,677,000 (barrels/day)
Oil Consumption: 2,916,000 (barrels/day)
Proven Oil Reserves: 60,000,000 (barrels)
Labor Force: 72,400,000
Ports: 8
Airports: 1,260
Railways: 87,157 km
Waterways: 96,000 km
Roadways: 871,000 km
Land Area: 17,075,200 km
Merchant Marines: 1130
Hope i could be of some help.