So basically they included both IPS and BPS patches, just to confuse people. I don't get it really, just pick whichever format is best for your hack. I use either IPS or xDelta, but not both at once.
Since I just included both a .IPS and .BPS patch in a recent release let me explain my
reasoning. The ROM checking of .BPS seems far preferable to the apply-to-anything whatever
nature of .IPS, however
.IPS is so ubiquitous I was certain that some folks would simply not play, or be unable to play, the patch if an .IPS weren't included. Ideally .IPS would be retired as a format, but I included it for accessibility.