What a difference a title makes. The last time Arsenal played in front of their own supporters, you could cut the nervous tension with a knife as Mikel Arteta’s side scraped to a 1-0 victory over already-relegated Burnley. Ninety five days on and having ended their long wait to be crowned champions the following night when Manchester City slipped up against Bournemouth, Coventry were given a rude awakening in their first Premier League game for 25 years. It’s now 46 matches since Arsenal lost a…