My two PS3 says nat type 2 but black ops 2 says nat type moderate why?

[dsl2cable]

I have the RT-56U with the latest Padavan's Custom Firmware 3.0.3.1v-027 Can you help me this problem?

 

[lurice0]

same problem

bump or whatever i have router rt ac56u and
ever since i hooked up openvpn client mullvad to my asus merlin router,
i can't get over 2 bars on black ops and my nat type is moderate all of a sudden. there are some you tube tutorials for fixing nat type from moderate to open, that didnt work. I have tried port forwarding and i tried DMZ both by picking an ip address for the ps3 and then configuring the router settings.