Explanation/Reference:
Explanation: You will notice that "cisco1" class map is assigned to the priority queue (the command is configured under policy-map IIq class cisco1 priority xxx) "cisco2" class map: is indeed configured using bandwidth 30%, however that defines the minimum bandwidth but not the maximum.
"cisco3" class map: is indeed configured using "bandwidth 20%", No priority configured and that will define the minimum guaranteed bandwidth.
The last choice is wrong! check under "show policy-map interface" There are 4 or more packets being matched by the "class-default" traffic class in the "IIq" policy.
Class-map: class-default (match-any)
4 packets, 968 bytes