It is a home game for Arsenal, which makes this game more interesting than I would otherwise expect. I think a game at Manchester City's would be a much harder task than this one. Arsenal is in great shape to go for it now, but this game also involves some desire for revenge for last season. If Arsenal beats Manchester City, I think it would allow people to dream again that Manchester City won't pull off a one team show this season again.
Arsenal against Lens were defeated easily, and this was a shame for Arsenal because they had to lose to their opponent when playing at home. In the next match, Arsenal will meet Manchester City, and this is quite an opponent for Arsenal. The winning percentage is very small, which makes it very suitable for gamblers to place bets and give their choice to Manchester City because Arsenal is unlikely to win against Manchester City.
Arsenal shall not feel a shame by losing against lens. The club needs to feel a shame once arsenal will be going back to the europa league. The chance for arsenal is still there as long as the club will able to get win streak till the end of season.
Lens is always having very good record once it was facing arsenal. That lost already predictable caused by arsenal played so badly against lens away. Lens might be struggling at the bottom of the table in league 1.
The result against arsenal proves that if any club that was performing badly in the domestic league should not be underrated at this moment.
Arsenal might be seeing lens as easy opponent. That's why arteta's club was not playing consistently caused by it was feeling so confidence to win with huge scores.