Lets look at that reply again, and bold the pertinent bits.

If you understand what i say then why are you picking bones over an accurate answer, the world map was designed to accomodate the dolls, scaled to the dolls the map of XCX is both smaller and less detailed than Skyrim, the player characters in XCX are not what the overworld geometry was designed to accomodate, prefab structures dotted around the map are designed to accomodate the player outside of the doll, the overworld itself is designed to accomodate the doll.

In skyrim/fallout 3/nv/witcher, the overworld map is designed to accomodate the player character and the player character only.

Also, my response of simply "No" was a result of you asking if it was bigger than several games, both Witcher 3 and Fallout 3 are larger, as for Fallout 3, view this map, it's an overlay of game world in google maps which shows the accurate distances involved.

Overall it's a good game, if it wasn't I wouldn't have called it my "best game of the generation so far" when it launched, (isn't anymore, in my opinion). but my main drive to play it as much as I did was to get a Doll, then once I got one, it was unlocking the flight unit, once I had that, there was next to no reason to continue playing as you aren't really rewarded to keep pushing forward anymore - sure theres higher level monsters roaming the world that you can try to kill, but even if you do, you just reach a point where you no longer care to.

And when you reach that point, you look back at the journey you took to get there, and it just ends up feeling like one big grindfest, much like pretty much every MMO. In part because the storyline itself is really forgettable and the personalities of the characters in the game just don't fit well together, you never feel like you really give a shit about any of them, and without a form of attachment towards them the story just floats on by as an anouyance between completing a mission and starting the next.

So basically instead of answering the question accurately, you pit your own spin on it so you could say the land size is smaller. Gotcha.

Before you get your Skell, does the games' landscapes and vistas make up for the lack or npcs/towns/etc? And does getting the skell after 30 hours feel rewarding? I have to admit, I'm mainly interested in this game because of the Skells, vistas landscapes, and the variety and design of enemies. I don't really like JRPGS in general especially grinding unless its Pokemon.

I answered the question accurately, it was just too accurate for some, it seems.

Only in your mind is "no" an accurate answer when the landmass is bigger. 

Initially, yes, they look pretty, but it becomes painfully obvious in a short amount of time that a large portion of those vistas are inaccessible without both a doll/skell and a flight module, and receiving the first skell is rewarding for about 5 minutes, or to put it another way, the time it takes you to equip the doll, and head into the world map to kill something, only to prompty have your doll/skell destroyed. and you are limited on the number of times you can "revive" them, too.
Having the doll equipped when you are first given it does next to nothing for your ability to kill enemies, running out there and trying to kill something a couple levels higher than what you were attacking on foot up to that point, will result in getting your butt kicked.