Guardiola's main strength is that his bench team is very strong. Manchester City have a number of talented players on the bench. Due to this, Manchester City does not face much problem if any player in the squad is injured. Because they have qualified replacements. Other teams in the Premier League do not have this. The bond between Arsenal players is strong. Their squad is strong. But the bench players are not talented enough. And so when key players in the squad get injured, Arsenal's performance deteriorates. Without three key players in the team's midfield, it is absolutely commendable that Manchester City is performing the way it is. This team is performing quite well. Still their performance is stable.
Yes, that is Pep Guardiola skill in recruiting players where the players he has recruited have become an important layer for them when rotation is needed because his backup players are able to make a big contribution to close the gap when their core players are injured.
Alright, most likely this will also have a big impact on their might in the Champions League this season. I think Pep Guardiola also needs to anticipate quickly to immediately look for new players in this transfer window in order to maintain their chances when they face a busy schedule.
A club whose first 11 is doing well and playing excellent football must surely have a good second 11, which is the reserve squad.
If the first 11 which is the starting squad is good, that means there is a lot of competition in the team and the reserve squard would want to fight for some position and that will make them to be also as good as the starting squad. This way, the manager will have many options to explore in every match they have. For you to be able to win title in every season you must have good defence and you must also have a good squad depth, especially when you're playing more than one or two competitions. You will need to relieve some players of fatigue and use some other players. But if you continuously use one set of players, they will get tired on the way.