If the united states and russian federation were to engage in a conventional military conflict?

In detail what would be the statics and figures in a conventional military conflict between the U.S and Russian federation in numbers and losses of Aircraft, Vessels, Vehicles and Men in a years worth of fighting. who would be the tactical victor. what equipment would triumph over the other. and even more important whose leaders are more decisive. I will allow the use of tactical nuclear weapons and chemical munitions in this scenario.