I'd say our ending of the season went downwards. While theirs ended, and now started, on a high. So those 10 points, or whatever it ended up on, doesn't mean much today.
Yes, I think Arteta will bring more out of that squad this season.
Looking at our squad, I don't feel comfortable going into this season. We still have that weak bench. Pogba's desire and is still a question mark for me. Rashford's been out of form for quite a while now and I don't know when he'll turn around again. The same with Wan-Bissaka, as you could clearly see a different player at the start of the season comparing to the later stage. Can Shaw stay fit? De Gea or Henderson? We have a good starting eleven, but when they don't perform, we don't have options. As we watched them under perform at the ending stage of the season, Solskjaer had nothing tactically to come up with. He just kept on playing the same players. Putting trust on those individuality's to put in a performance.
Looking at Arsenals, I actually think they have a decent squad. They have interesting options going forward. Decent options in midfield. Leno looks good. Defense could be better, but I think Gabriel could be a great signing for them. Hell, I wanted us to sign him and have him in as one of our starting center backs. I would also think that Arteta has the right mentality and managing style to get these players working together. And think he can tactically change the game if needed.
How is it that you think I'd need an excuse for Arteta?
If they don't finish above us, I'd just be wrong and that's it.