TW3 has big cities, and growing hair.
DAI has two genders, four races, three classes, and two VO's for each gender for the main character.
TW3 has many GOTY Awards; DAI has a lot of GOTY Awards including the DICE Award.
TW3 is an Action RPG; DAI offers Action and/or Tactical with Pause.
Etc.
Well, since you're so good at stating the obvious, I will just tap on some points here.
TW3 has big cities, small villages peppering the map, abandoned sites you can reclaim. Each village is full of people who are not stationary and even do different things. Sometimes they wash clothes and then the same villager may be tanning hide or simply hanging out in the local tavern. Each village has children playing in puddles, singing songs and playing sword fighting. Some villages are nicer than others and it's reflected in how they live. Some villages have painted houses and nice interiors, while others reflect the poverty stricken nature of the war. Villages inland have actually working farms with cows, ducks, chickens, goats, sheep, horses, dogs and cats--while the forest that surrounds them has various types of fauna and trees and are brimming with deer, wild dogs, rabbits and various birds. Villages that are coastal have dry fisheries set about, where they place their fish to dry. They have docks and merchants set up around them. They have ships that people are loading and some even have a shipyard where they built ships and boats. You can also see people fishing.
It also has water dynamics and this is what I love, personally. The water is nothing short of amazing and are loaded with shipwrecks, smugglers caches, various types of fish roaming around and my favorite: whales that actually breach. They're enormous, btw. I have been told they even make the haunting whale sounds. You can travel this vast oceans using a boat and the sun setting and rising is breathtaking, which brings me to another point-- TW3 has day/night cycles with dynamic weather. It rains in regions that are appropriate and snows in areas you'd expect it. You can even see the lightening streaking in the sky during storms. It's awesomesauce. There are also tons of dungeons, ruins and abandoned domiciles to explore, if that's your thing. You also pass people on the roads, camping for the night, fixing their broken wagons or riding horses. Yes, more than one person can and do ride horses. Not just the protagonist! As for the hair--yes, it does grow. There are also barber's you can visit and change your hairstyle and facial hair. I know, it isn't a magical mirror that completely changes your looks and no one even notices you're different, but having a barber (even a drunk one at times) fits in with the surrounds quite well and makes it a bit authentic feeling. You can also bump into the NPC's and they'll curse at you for it, even the little kids react. It's pretty fun.
As for awards, if I am not mistaken, TW3 also won the D.I.C.E. Award. It won over 800 awards, 250 of them being Game of the Year. According to it's wikipedia page, it won around 200 just from it's previews at E3. Pretty impressive, I'd say. Though DAI got a lot of awards, too. It was nice to see.
As for TW3 being an Action RPG, I am not sure I'd argue with you there. I will argue tactics. Both games have tactical gameplay, if you so choose to utilize it. The only difference being that DAI uses tactics during the fight, while TW3 uses tactics before the fight. It's pretty interesting, too. Unlike DAI and their enemy weakness system, TW3's system is a bit more....studious. Enemy potions and *oils (*sort of like poisons in DAI) isn't a catch-all. You have to investigate and figure out which monster you're going to be fighting and choose accordingly. Every enemy is categorized in your bestiary and that category of beast uses different oils. You also have to watch what kind of potions and decoctions you use because if spam them and take too much, you'll poison yourself. Which not only effects how you fight, but how you look and it can kill you.
TW3 also has a better mount system. If someone is with you, they ride along with you instead of disappearing into a saddlebag or black hole. Now, I know Bioware said pathing issues prevented them from having all party members riding horses and I get that, but it's nice to be able to see your crew riding alongside of you, or challenging you to race them. You can also fight whilst riding your mount in TW3. I personally like this because I hate having to dismount every flipping time an enemy pokes around and it provides comedy when you're fighting mounted bandits and you're trying to joust each other while going in circles. Good times ensue. Roach also allows you to carry a trophy. These trophies come from contracts--yep, you get to take a trophy when you kill them. Geralt deserves them. These trophies aren't just for show, they offer benefits that help you gain more gold, etc. Roach can also carry saddlebags that add to your carrying capacity. And he is fast. Stubborn, but fast.
etc. etc.
Thank you forum user for telling me about his post. It was fun talking about all of the things that make TW3 awesome!