Has Arsenal finally rejoined Man United and Chelsea?

This may seem like a weird question, but for the last few years it felt like Arsenal was sort of the third wheel in the EPL, ya know? Better than the rest of the league, but not quite on Chelsea and Man United's level of talent. However, this year they've finally matured at least a little bit in my opinion. The string of poor results was disappointing, but at least they've proven they can go toe-to-toe with United and Chelsea, having beaten both of them. Is it say to call it the Big 3 again instead of the Big 2 like it has been the last couple years?