I'd say it goes FF6>CT>FF4>FF5

I never really saw what was so remarkable about Chrono Trigger. Maybe it was because I didn't play until the DS version.
While I admired how well it'd been put together as a multi-branched story, I never really identified with any of the characters and the story was fairly traditional.
FF6 on the other hand had a lot of great characters and also a much more gripping story. The whole end-of-the-world thing was done brilliantly and I loved how the pacing and structure of the game adapted to the plot (very linear and structured until the midpoint but then open and messy afterwards)