Another thing to remember that affects everything is the removal of crushing blows, I believe for anything up to 3 levels above you. So if you ever got a crushing blow before, you won't now.

Technically a heroic is a raid because of how it saves you to the instance. Type /raidinfo. Also notice that if you log out after a heroic, when you log in you are still in-party. I haven't seen any specific mention though whether heroics are nerfed or not though and I did not see anything specific that said it only applied to 10-mans and 25-mans. One thing for sure it's hard to tell whether they were or not but personally I think they are.

Over the weekend my well geared warrior tank friend with 4 of my shaman smoked 2-1/2 heroics in fairly short time. His previous group could not get past the third boss in H.Mgt so after the group fell apart we went in and finished it up. Then we did H.UB and H.SP. Only 1 shammy death at the end of H.UB. The tank was taking less damage than I'm used to seeing that I'd force myself to wait till he was half empty on health then do 4x lesser healing waves to heal him up. He also had so much threat I could go all-out dps'ing from the beginning of each pull, it was insanely fun.