Help with a French translation

[Fred Rogers]

I have a question in french that asks me to compare two films (Cyrano de Bergerac in french and Roxanne which is in engligh)

Comment peut-on analyser les différences dans l'interprétation et la réalisation des deux films quand on sait que les deux sont basés sur la meme piéce?

Does this mean I must account for the different events that occur in each film in spite of them being based on the same work?

 

Thanks!

[George Hunt]

Doesn't "quand on sait" mean more "taking into account" than "in spite of" ?