How much does form affect the matches from your experience?

Lets say your player is quality 35 and form for the past 5 games are 5-4-6-5-5

compare with a player of quality 28 and form 8-9-8-7-9

which player is better for the team? I don't see enough being mentioned in the forum about form. However from my own observations the player with higher form does better, can you confirm? Thank you.