Agreed that we've certainly not been that lucky overall in the injury count. But your list somewhat shows my point that the guys who, for me at least, are key to how we play haven't missed too many games, and often spread out at separate points in the season when we could cope. The games when we've struggled is when we've lost our width in Sane/Sterling, or lost our midfield duo of De Bruyne/Silva - and for the majority of the season we've had these guys available.Games missed -
Mendy - 48
Kompany - 26
Delph - 15
Stones - 14
Jesus - 12
Silva - 10 (Not Injury)
Aguero - 7 (And out for the rest of the season)
Sterling - 5
Sané - 4
I don't think we've been that lucky to be honest. 7 players have or will have missed 20% of the season or more, and at least 4 of them are in our starting XI.
I think the reason we appear unscathed this season is simply because we are now a system based team. The system is king, and the players are coached well enough that if someone is injured you can fit someone else in. Quality in depth probably helps there too.
In contrast under Pellegrini and Mancini we basically had to have Hart, Kompany, Yaya, Silva and Aguero on the pitch or else we were severely weakened.
I think a big injury to Sane/Sterling is a big worry for us with our current squad. Like you say the system is king, but our current system is so effective because of the width these 2 provide. We've tried De Bruyne/Bernardo out wide this season & whilst they're certainly not bad, we're no where near as effective. However as I say, I expect Pep is acutely aware of that & will add in another natural wide man in the summer to prevent this happening.