[RB751G-2HnD] Is faster Bridge or Switch ?

Hi,

Is faster bridge or switch ?
I have a RB751G-2HnD , use ether3, ether4, ether5 like a simple switch. I can to set up this in two way:
Bridge

interface bridge add
/interface bridge port add bridge=bridge1 interface=ether3
/interface bridge port add bridge=bridge1 interface=ether4
/interface bridge port add bridge=bridge1 interface=ether5

or Switch

/interface ethernet set ether4,ether5 master-port=ether3

Thanks !!!

the switch is more faster

thank you