Villa came from behind to win 2-1 on Sunday thanks to a brace from Rogers.
Emery remarked afterwards: “We need individual performance. We must get our structure stronger, collectively, tactically, be disciplined and organised, but individually, we need how they can feel comfortable, confident, play with their skills.
“And in different matches, we are showing, as well, individually, our performance. And today, was brilliant, Morgan Rogers, but Morgan Rogers, he's playing fantastic, even when he's not getting his numbers, like today.
“Scoring goals, of course, is more brilliant, and for the supporters or for everybody, is more relevant, his work, but always, he's doing his task.
“And now, I can say as well, the work he did today, (Ollie) Watkins, was fantastic. And at the same time, Morgan Rogers always is working very well, he is doing his task, Watkins.
“And, of course, we need Emiliano Buendía, we need (Jadon) Sancho, we need (Evan) Guessand, we need (Donyell) Malen, today fantastic, how he was impacting the second half.
“And, as well, we need Ross Barkley, how he is as well helping the team progressively getting better, and feeling confident as well, playing (as) a 10 number, and, of course, overall, how we felt in our structure, strong in 90 minutes.”