TASK 13.26:TCP Load Distribution with NAT

Is there any added benefit to creating the pool the way the SG does it?  

or is it just there to show us an alternate way ?

SG did it this way

ip nat pool LOAD_BALANCE prefix-length 24 type rotary

 address 155.1.0.1 155.1.0.1

 address 155.1.0.2 155.1.0.2

 address 155.1.0.3 155.1.0.3

I did it this way