Correct.
-Budokai games: Same score, though the intro songs were reduced to instrumentals.

In Budokai 1, Cha La was replaced with Rock the Dragon.
-Budokai Tenkaichi: All of the music is changed. Licensing issues, methinks. But it's all different. BT1 just recycled old Budokai tunes, while BT2 had entirely new music. In the case of BT2, I prefer it's music over Sparking NEO. The music was higher quality (like comparing mp3 to midi), and each tune was a lot longer than the super-short and never-ending clips that Sparking NEO had. It also just had some straight up good music.
-Super DBZ: Same music, though I don't think any of us can say the music from that game was memorable. I can't remember anything from it. The intro, which was Cha La 2006 remix, was removed for the US release.