Yes the verandahs all extend back the same distance as the other cabins of the same deck.
I don't think I'd take another cabin with an ordinary side view verandah instead of this one, despite the slightly smaller cabin size. Unless you anticipate rainy weather. Our cruise was up to New England area, and we did have rain. I really missed having a comfy place to sit and enjoy my room service coffee and Danish on those mornings. If the weather had been nice, the verandah would have been wonderful with that extra verandah space.
And the view can't be beat. Still I have to warn that none of those aft verandahs are as much larger than the others as it would appear in the deck plans. This is because the entire aft of the ship angles inward and upward. Meaning theres a lot of deck space under the angled glass side rail, that you will never step foot on. I'm including a few photos that kind of show what I mean.
The angle kind of ruins any privacy you might have also, in that if you stand at the rail you can see right over onto your neighbors verandah. This was fine for us, as our neighbors were our very best friends. We loved chatting over the divider. Like in this photo.
The people on the decks above us, could see us only if we stood right at the rail. The rest of the verandah was covered.
And here are some views from the verandah.
