Arsenal playing some really good football not just possession and control but creativity and persistent little triangles up front patiently probing and tiring defences out...which leads to a lot of late goals.
If you haven't been watching the full games then you might be excused fof thinking they are lucky. Rice has been literally a solid investment, no soft underbelly anymore and he is contributing to goals and scoring too.
No drop in quality from subs, in fact, subs never seem rusty and can be counted on to add more pressure on the opposing team.
Something turns me off about Arteta, but he has certainly pushed them to a new level of discipline and industry and are deserving title contenders to me.
If you haven't I'd strongly recommend watching a few of their full games to get an idea of how much further we have to go. Of course we are a couple of years behind, but lots of transfers and hard work still needed to match their high levels and consistency.