Platform: Windows 7 64 bit
ISP: Comcast
Type of Internet Connection: Cable
Internet Connection Speed: 15 mb/s
Date & Time: October 13, 2011 about 8pm CST
Frequency: Always
Character Name: Jayvir Deforte
Race: Wildwood Elezen
World: Besaid
Class/Skill Rank: Thaumaturge 45
Area and Coordinates: Bald Knoll
Party or Solo: Solo
Monster Name: All enemies

After casting any Sacrifice, the following is displayed

You use Sacrifice II. You recover 350 HP.
You use Sacrifice II on yourself to no effect.
Your Sacrifice II grants you the effect of Regen.

After casting any Cure, the following is displayed

You use Cure II. You recover 275 HP.
You use Cure II on yourself to no effect.

It's fairly odd considering that it does in fact still heal you.