Norwich is perhaps the weakest team in this year's Premier League. After seven games he has only three points with three draws and four defeats. He has the worst attack of the league with five goals active and the second worse defense with 17 goal pass. He lost to 4-1 in London from Chelsea and lost 2-5 from Liverpool shortly before.
Arsenal, on the other hand, has not yet managed to find a rhythm and stabilize its performance at a high level, but it has proven that it has. Her losses lately are mainly with rivals such as Manchester City and Chelsea. On the contrary, with the weakest teams he does not seem to have any particular problems.
I think the difference in capacity is great. Arsenal is the absolute favorite for victory.