The HOWTO (and the wiki Installation Guide) somewhat incorrectly compare MBR and UEFI. While they are (correctly) separate, MBR deals with the storage of partition information while UEFI is responsible for handling machine startup. MBR storage is used by the (legacy) BIOS. GPT is the partition storage system used by the newer UEFI.
To keep things similarly short, I changed the HOWTO to read "The 32-bit version has better system compatibility and partitions/boots using MBR/BIOS instead of GPT/UEFI."
The HOWTO (and the wiki Installation Guide) somewhat incorrectly compare MBR and UEFI. While they are (correctly) separate, MBR deals with the storage of partition information while UEFI is responsible for handling machine startup. MBR storage is used by the (legacy) BIOS. GPT is the partition storage system used by the newer UEFI.
To keep things similarly short, I changed the HOWTO to read "The 32-bit version has better system compatibility and partitions/boots using MBR/BIOS instead of GPT/UEFI."