IPS does a straight byte compare so when files get shifted (as they will in this case) the IPS maker thinks the entire file has changed, not to mention that IPS has a 16 megabyte limit.
XDelta is what any betas will be in (it works and I know it) although I will look into PPF and BSDiff, if people really want it I will make an executable to do the deed.
@HipN you can see the progress that is being made on the translation, that is what everyone is working from:
http://crisistunity.com/justp/
The reason for the bars on occasion over 100% is that in this way of translation multiple translators can have a go, if one line gets done twice it counts as two lines done.