Endurance. Take a look at the number of cycles you can write it.
MTP is only 1000 times from the looks of it. Sounds like they are using the same kind of technique as a company named Impinj invented. More like NSMTP (Not So Many Times Programmable).
MPF looks like classical flash memory endurance. 100k cycles.
Means, MPF in general terms better device than MPT.
If our purpose solved in MTP, we can use MPF without any downside.
Also, MTP require 12V to erase the chip, MPF require same 5V to erase - it handled by the programmer, thats whey PIN No. 1 they kept "NC"