You have been lucky then.
There are numerous examples on this forum of people having problems restoring from a compressed backup and IIRC Tiger himself admitted that the compression routines are not 100% reliable.
Anyway, why take the chance? If you have enough space on the FAT32 drive for an uncompressed backup then you can always compress it later with winzip or gzip etc..
6023, Lifetime, 240gb, Sky, CC, Mode 0, 100 SPs/AWLs
6022, Lifetime, 250gb, Freeview, CC, Mode 0, 90 SPs/AWLs
601E, my 'test' machine!