@AndyWilk09_PSN -- to the best of my knowledge, Franchise mode is the same across all versions of the game.
If I may, I'd suggest another option, and don't take this as me "shilling" here, but a PlayStation Portal might be worth considering compared to a Switch 2 (unless the S2 is something want for other reasons). It's significantly cheaper and it would be an extension of your existing PS experience, rather than forcing you to start over in terms of progress.
Again, the Switch presents a different, but also awesome, experience, so if you're looking to get a Switch 2 so you can play it with your kids as they get older or something like that, that totally makes sense. But if it's mainly about your MLBTS experience and making it more portable, I'd go with the Portal.
Hope that's helpful!
#NotAnAd 