Bearing in mind that it's so early on, I think it's very hard to tell.
Arsenal have only played 2 of the top 6 of last year away from home, getting 1 point. They've also played chelsea at home and lost.
we've played 4 out of the top 6 away and chelsea at home, where we also lost.
The fact that we've also been riddled with injuries since the summer, yet we're on the same amount of points as them, is good reading for us. Especially as we've got a new boss with new ideas.
I think it's too early to say whether arsenal are the better team at the moment.
I'd also disagree that we've looked better against "lesser opposition". we've had poor results against Norwich, West Brom and Wigan at home, only picking up 2 points out of 9.
But you've also had good results against Villa, Southampton and Reading.
When Kaboul comes back you'll tighten up defensively. In fairness to Arsenal they've had as many if not more injuries to key players as Spurs have.

