I too agree that Arsenal will prove too strong for Norwich, and hence the latter will end up losing by at least 2 - 0. Lastly only if Arsenal put in a very poor performance then Norwich have a chance of winning, but I really doubt they’ll be doing that because as you’ll have rightly said they’re displaying fine form in recent games.
Yes, Arsenal cannot be compared with Norwich. These teams have big gaps if we consider their players' quality. Arsenal must win the match easily, for me it should be more than 2 goals. I will never support Arsenal again if they lose in the next match, against Norwich. 
I don't see any reasons for Arsenal to lose with a team that is positioned at the lowest place in the table. So, I confidently bet if Arsenal probably wins with 3-0 at least.