Arsenal had Holding, Debuchy, Chambers, Cazorla, Elneny, Giroud, Walcott who weren't in the squad today, we had a bench with Mertesacker, Wilshere, Ospina, Iwobi, Welbeck, Coquelin and then Maitland-Niles. That is full of full internationals and senior players, has Arsenal got better squad depth because of that?
Carrick was a full international, undeservedly for most of the time he was involved, he's been useless for a decade, that isn't depth, Utd are a significantly worse side when he has to play. Full international is meaningless, because international itself doesn't mean squat, look at Italy going out thanks to a brain dead manager. Numerous undeserving players get called up, numerous players continue getting called up long after they are past their best and international football is at a quality far below club football. Senior player also means nothing much at all, senior = over 21, nothing more or less. Neither are measures of quality. Utd started at least two players who wouldn't currently get into other top 6 sides starting lineups, I'd argue it's closer to 3 or 4 players, Valencia and Lindelof as he's currently playing, no chance. then looking at the bench, most other top sides would have sold Fellaini, Rojo is all over the place, good sometimes, terrible others, Lingard is incredibly average, Herrera is just a bucket of hate and bad fouling, Shaw is being practically excluded by Mourinho yet that is his 'strong bench'. I'd say Arsenal's bench was stronger and City's bench.... lol.
City had only Danilo, Gundogan, Aguero, the other Silva, Toure and bravo on the bench along with a much stronger starting line up overall.
I don't believe a squad with incredible depth that has spent 500mil+ ends up playing Valencia as a fullback, Young as a fullback, is desperate to hang on to Fellaini, names a player Mourinho appears to despise on the bench and plays like utter utter crap if one midfielder is injured.
Maybe I'm missing something but Liverpool's bench was Milner, Sturridge, Ox, Can, Gomez, Solanke and Karius, that is 4 players with a lot of international experience and 2 more who were called up recently. Then players not in the squad, Clyne, Matip, Lallana, Markovic, Ings and Flanagan who isn't exactly great but is still senior and making up the numbers.