I'm getting tired of that Gfriend/Twice war. Gfriend had an amazing year, but if you compare Gfriend 3 weeks into their debut with Twice, I'm sorry they can't compare... Twice is from big3 so they got more attention, and luckily they are loved by the public. That's not unfair, it's harder to get into big 3 companies than in smaller ones, there is a reason for it...
Both groups deserve that award, Gfriend for consistently rising since debut (which is not something many rookie girl groups from smaller companies can do) and achieving a viral video (and what if it's of Yuju falling down X times? Bora got on international news for falling and breaking her thumb. It helped Sistar too... Nobody is holding it against her today. Gfriend fans should be thankful and not sensitive about it imo. Many idols fall, how many end up in a viral video? Gfriend was acknowledged for Yuju's fighting spirit, be proud of it!)
Twice for quickly achieving a good level of public recognition (and love) and high ranking with their debut song (which again, cannot be said of all debuting girl groups in general, including big3. They often receive a lot of hate before starting to get a following, look at SNSD, RV, Kara...). They got nominated way to early but they're doing very good, nobody can deny this. Just because they debuted late into the year doesn't mean they shouldn't get the award. It's also their only chance at this, just like Gfriend.
No matter who wins, it will be fair and well deserved, end of story.