Here is what their SP says:

ADAPTIVE RESPONSE ARMOR: When Iron Man/War Machine uses the Duo Attack ability, they may choose Incapacitate, Penetrating/Psychic Blast, or Ranged Combat Expert and use that instead of one or both ranged combat attacks.

What I am trying to figure out is what the heck it means? Do I get to make both Duo attacks still? Do I have to pick just one of those powers to use on both Duo attacks? Any help is appreciated.
Thanks,
Mike

You make two attacks like normal. However, the first one may use one of those powers instead of a normal attack. Then the second attack may also use one of those powers (still with -1 damage)

yes & yes or regular attack then PB,INC,RCE attack

So I can use any combo of the 3 powers for my 2 attacks then. Cool. Thanks for clearing that up for me!

I suggest using incap for the second one so you don't suffer the penalty.

No, you cannot mix and match - you choose one of the 3 and use it on one or both attacks. For instance, if you choose RCE, you can go RCE + RCE, RCE + normal, or normal + RCE. You could not use RCE + Incap.

Not quite. If you use one of the other 3 powers, you can't switch to another.

For example: you decide to use Duo Attack and pick Psychic Blast for the 1st attack, for the 2nd you can choose either normal Duo Attack or Psychic Blast again...not one of the other options.

EDIT: Beaten!!

Too many different answers!!! Ok, so I can't use more than 1 of the 3 different powers, but I can use it twice or once and if once, I can use it first or last. Got it.
Thanks again,
Mike

you have to choose only one of the three. once you decide you can the you it twice or make a regular attack then use chosen power or use chosen power then make regular attack. now do you understand?

Questions did a bit of a FAQ for this, so here ya go.

You can take this as legit too since in that thread, we were given clarification from Nbperp, which is how the list was compiled.