Personally I think Arsenal was very lucky to remain consistent in winning most of their matches in the absence of Saka and Gabriel Jesus because the team lack depth if any of their present attacking players get injured no replacement for any of them, for instance Martinelli was drafted to Saka attacking right wing while Trossard was played in Martinelli preferred attacking left wing, however if any the duo get exhausted or tired no replacement except Nwaneri while Raheem Sterling isn't a good option instead Arteta would have to change tactics and formation.
Honestly I was also not that expecting that Arsenal can able maintain their consistent in most of their previous matches and the present ones in the absence of Saka and the Gabriel Jesus who’s want to injure more than a month now, but with the much efforts of their coach Arteta he make every thing possible by bring a good squad that will hold the Saka wing well standard.
As the the Arsenal performances is still remain in well standard even in the absence of some of their players, and the Saka is going to back any moment soon; that means if their performances will be more powerful once they Saka come back from the injury.