Could you consider the Mass Effect 3 Citadel DLC the REAL ending?

When you finish the game, you return to just before assaulting the Illusive Man's base, but I believe you keep whatever skill you reached plus any weapon upgrades.

With that Citadel DLC, you take your whole squad with you, and you can actually see the other two teams off in the distance.

In your final confrontation with your evil twin, he/she has your exact skills. I was a level 58 infiltrator with all of the skills maxed out except missing one on sticky grenade, and two on sabotage. I don't know about you guys, but my twin was super hard. It kept turning invisible on me, and the cloak not only lasted a long time, but it regenerated only a few seconds later, and getting hit with incinerate had me reaching for a medi gel after one hit.

I did like that public arena where you can invite any past or present squad member. It was nice to see how people like Miranda, Jacob, Kasumi, and Zaeed fight in ME3, plus having odd team ups like Grunt and Wrex on your team at the same time, or Miranda with EDI.

The party, however, was how it should've ended, and since I had everyone survive the end of ME3 (EDI can always get another body), I think I can use that party as the true ending, can't I?