Arsenal always get their gear on in these cup finals. They can do it.
They can certainly do it without a doubt, the question is that will their defensive, midfield and Ozil step up? Especially when Sanchez is not going to do the job for them this time around.
I'm not even sure if this City team are top 5 in PL history; I would consider mutliple United, Arsenal and Chelsea teams above them. United and Arsenal in the 90s, United and Arsenal in the early 2000s, Chelsea 2004-07, all played fantastic football and won more.
If City win the Premier League (by over 100 points) and win the League Cup. They would in my view be joint 3rd with the Chelsea 2004-2007 era team, with the United team of 2007-2009 and the United Treble Winners (despite their somewhat low points tally for a PL Title Winner, the fact they won all 3 trophies in the same season compensates for that) in 2nd and 1st place respectively. If City do all that and somehow win the Champions Leagues, we would be the 2nd best or even joint 1st.
The invincibles and United treble teams are the best English teams ever, then can be followed by some Chelsea teams like 2005-2006, 2010, United 2008, then yeah can put City this season and Chelsea last season as numbers 6 and 7, but regarding top 2 a team will need to achieve something remarkable to beat the invincibles and the treble team.
I would rate the Chelsea 2004-2005 team as better than the Invincibles, simply while both of them lost the same number of games overall (across 4 competitons) (1), Chelsea won the League with a higher points tally, won a domestic cup and reached further into the Champions League than the Invincibles did.
Likewise I would also rate the United 2007-2009 team as higher than the Invincibles as well, since their PL points in each of those 3 seasons was either the same or similar to the Invincibles while they also won a Champions League, reached another CL final and won a Domestic Cup to boot during that time.
Thus it's such a shame then that when it came to their 2008-2009 season, they came so close (In other 2 addtional Premier League wins, a FA Cup Semi-Final win and a Champions League final win) away from becoming the definitive English Club side of all time, in other words the first team to win the Quadruple and do so with a record PL points tally to boot.
(1) And besides Chelsea 1 Premier League game loss that season is not exactly that much worse than Arsenal's losing record the previous season (and lets not forget the higher number of Premier League wins by Chelsea in 2004-2005 compared to the Invincibles as well