Good day,
Depends. Both have different security concepts, which is why it may be better to use JondoFox when having Jondonym configured as your exit. The TBB is more focus on making you seem like every other Tor user while JondoFox tries to stop any possible tracking. What is better is debatable and may differ from situation to situation.
However, the main question would be whether it even works when using JondoFox as the configuration may have a problem at some other point.
Have a nice day,
Ego