The W-LAN standard seems to be the same, but there are differences in the place of use and operating modes, among other things. You can find a comparison here:
https://www.galaxus.ch/Comparison...
Yes, the FRITZ!Repeater 1200 can also be operated as an AccessPoint; AVM calls this a LAN bridge. This can be set via the WebUI.
Here is a link to this (although it is for the 1750E, but this is identical for the 1200):
https://avm.de/service...