Characters are balanced across experience. So a 25XP character from EotE is probably balanced with a 25XP character from F&D. But a Jedi is not a 25XP character. No more than Boba Fett is a 25XP Bounty Hunter. Jango Fett went toe-to-toe with Obi Wan and Jango wasn't a Jedi. Don't make the mistake of thinking a starting character in either system is what you see on screen with Obi Wan, or Anakin, et al.
The other important point? If you start at the top of the food chain, there's nowhere for your character to go. Every role playing game in the history of the medium will break after a certain point. All characters have a shelf life - why would you want to power level to lvl60 just to sit around?
Okay, it's not for me to judge anyone else at their table - but that would be boring for me. The point is the journey, not the destination.
