Only Sterling got as many player performance posts as Grealish probably because they're both frustrating to watch which caused so many conflicting opinions . But there's a difference between them. Sterling contributed with plenty of goals and assists, Grealish hasn't done.
Raheem scored 128 goals with 72 assists in 7 seasons and could have scored many more goals and assists because he was involved a lot in our attacks. He played on both wings scoring 91 goals with 44 assists in 269 appearances on the left wing.
Jack is into his 4th season with us and in 3 seasons has scored 14 goals with 18 assists. This season he's been mostly injured or unavailable due to a 'mystery' injury, but thus far has 1 assist from 7 games. We can all come on here and sugar coat his performances with remarks like - "Jack draws players onto him and wins fouls". "Jack doesn't lose the ball", "Jack tracks back" etc, etc. But be honest with yourself, has he been a success, has he contributed enough, is he a game changer, and is he worth anywhere near what we paid for him? For me the answer is no to all 4 questions, sadly. At Villa he was exciting and dynamic scoring goals and assists with plenty of MOTM performances. I can't say that he has been for us. What's happened to that form? I think he's been underwhelming as he has so much more to offer but mostly players the easy option safe passes and he mostly plays within himself.
Raheem played on both wings and as a false 9, Jack has only played as a left winger and I doubt he'd be good enough to play on RW or false 9. And as for being played in centre mid I'm not sure but maybe worth trying.
Am I a hater? Don't be silly. Do I like Grealish? I certainly don't dislike him, but I'd like him a lot more if he could discover his Villa form because if he can discover his Villa form he'd be a game changer. I think he still has this season to prove himself but unless he starts scoring goals with goal assists, and being a game changer I very much doubt he'll be at City next season.
And I want him to prove me wrong. I was once critical of Sterling but he proved me and all his doubters wrong. I'm still waiting for Grealish to...