Griezmann: 15 non penalty goals and assists in La Liga, 2083 mins played.
Foden: 21 non penalty goals and assists in Premier League, 2468 mins played.
CL:
Griezmann: 6 goals 0 assists in CL 23/24
Foden: 4 goals 3 assists in CL 23/24 (7 total).
One stars for Manchester City (treble winners, their POTS so far) and the other plays for Atletico Madrid.
"Significantly better" - significantly more established maybe, but better? Nope. Not by any of the numbers this season, not by the eye test, and not by the level of team they play at. Maybe last season but maybe it's time to accept your boy is 33 and has declined a little.