I also expect Arsenal to win tonight. Arsenal are on a good momentum right now and have far better quality than West ham. With Liverpool leading the table temporarily Arsenal will target to get the 3 points desperately and be on the front seat again on the table. Hammers are a tough opponent as they have some good players so Arsenal might have to be wary of their attacks.
West Ham will not be of any threat to the Gunners tonight and I believe that Arsenal won't want to lose this game or draw after playing a 1-1 draw against Liverpool knowing that Liverpool won their game and also topping the table, this game is going to be very hard for the visitors because the Gunners are going to make the defense of the visitors to be very busy.
West Ham haven't been that good this season and I feel they have been lucky to even get a win against Manchester United just because Man UTD are having it hard to play as a unit.
Arsenal need to win this game to go back to the top of the table as league leaders but for that to happen Arteta need to make his back line to be more aggressive because West Ham have guys who likes running through every defense they play against and I don't see the West Ham defense to be that strong to stop Arsenal's attackers.
Yes, the game against was a good opportunity to create gap between them and Liverpool on the table but they lost that opportunity but still they managed to draw and maintain the gap so a decent outcome I would say. But from here on Arsenal needs to win the matches and become more consistent. Last season at the end lack of consistency is what took the title from us but this season we need to make amends and not make such mistakes again. Hammers haven't been their usual self but they have some tough players who can be very hard to deal with at times. Their attack is really good so it is really important for the defense to be alert in today's game. I hope Arsenal finds some early goals and maintains the pressure till the end and hope it ends with 3 points for Arsenal today but I still feel that it's not that easy.