Switching Power Supply - Inrush Current, Input Current, MCB
The input to this supply is rectified and the rectifier output likely charges a capacitor bank.  This means the supply will draw current only during part of the sine wave input, during the period when the rectified voltage is higher than the capacitor voltage (biasing the diodes on), so peak input current is higher because all of the input current happens in this short period (Tc in the diagram below). I would go with the higher number when choosing a switch rating.  Since there is no current during the remainder of the sine wave, the input power is instantaneously zero during this time, and the average power input (average of instantaneous voltage x instantaneous current) is likely what they use to calculate efficiency.

This same capacitor bank is the culprit for your inrush current, so it is pretty much independent of the load during start-up.

Good luck!