Arsenal vs. Napoli: Instant Reaction

Remember when this was supposed to be a tough group?  Hey guess what, it's still a tough group, but Arsenal are a tough team.  Goals from Mesut Özil and Olivier Giroud saw Arsenal ease to a 2-0 win at the Emirates over a team that was supposed to cause the Gunners fits; the first half was a masterclass in Arsene Wenger-style soccer, though, and while the second was a bit more labored, the result wasn't really ever in any doubt.

So that's six points out of six in the Champions League, seven games in a row in all competitions, and, what, 21 unbeaten out of 22 since the downward spiral was first diagnosed in March? Something like that, anyway.

Sadly, I didn't see the match, so I will have to leave the detailed analysis to others, but I will leave you with a couple questions:

1. No Santi, no Theo, no Podolski, no Oxlade-Chamberlain.  And yet a pretty easy win over a legit opponent.  Anybody still concerned in any serious way about Arsenal having no depth?  Seriously?
2. From what I read during the match, Arteta doesn't seem to have missed a beat - is that true or am I wishcasting?