Advantages of the lee enfield rifle in World War 1?

The rifle pictured is NOT a Lee. It is a Canadian Ross straight pull. The SMLE had two advantages over the American Springfield '03 and the Mauser Gew98.

1. It fired from a 10 round magazine as opposed to 5 rounds for the Mauser and Springfield.

All were loaded by the use of chargers (clips) through the top of the receiver.

2. The action of the Lee cocked on closing, resulting in higher rate of fire.