Scale and the raaga equivalent of the titanic song "My heart will go on"

    I was recently doing some comparisons between the Indian classical and western classical for a school program.The song I took was My heart will go on from titanic.I found the scale of the song was F major.But when I was looking into the raaga aspect I could see that it had most of it part in the raaga sankarabharanam except for the note B flat which is of course B natural for sankarabharanam. Going by the scale pattern of F major its raaga equivalent is Harikamboji which is of course the janyam of sankarabharanam.

    The equivalent of sankarabharanam in western scale is the C major scale.Almost all the notes are similar for F and C major scales except for the note B which is Flat in case of F major and  natural in case of C major.

    After doing various analysis I found the melody was sankarabharanam in most part with a touch of Harikamboji.