Sounds like a thriller. Feel a bit sorry for Bournemouth after being 3 up. Oh well. I'm sure they'd have taken the draw before kick off.
Meanwhile 10 points between the top 6 is tighter than normal at this stage. Could really do with Chelski loosing their game in hand. Don't need them pulling away anymore.
Match reports suggested that Bournemouth would have been more than happy with a draw before the match, but, by the end, they were 'dejected'.
Often, after a drawn match, one team has psychologically 'won' while the other one has psychologically 'lost'. Bournemouth - 3-0 up well into the middle of the second half - should probably have won the game.
While it is a testament to Arsenal that they managed to come back (they are an excellent team, after all), - and they did show serious fighting spirit in the second half - they should never have fallen behind by so much - three down! - in the first place.
Not only that, this is not last season when all of the top clubs inexplicably screwed up at the same time, while Leicester kept their heads and played solidly all season, making history in the process. This season, things are a bit different.
Now, all of the tops clubs are finally finding a degree of confidence and consistency at much the same time - your observation about distance between the top six being very tight is spot on - thus, in order to stay apace of this leading pack, this - that is, now - is not the right time to drop points.
Arsenal were lucky to get the draw; but - as all of the other top teams are winning, they need to keep winning simply to remain in the same spot. This is a relief, - to have clawed back the draw - but still not good enough.
All credit to Bournemouth who fought like lions and would have deserved the win.