Why does the spell "Stabilize You" exist...?

So, Ancestrals get a Rank 1 Spell, "Stabilize You":

Can revive target from First Stage Death
Count with 1 Body.

XP cost--423

They also get a Rank 1 Spell, "Cure Light Wounds":

Heal up to 2 points.

XP Cost--421

So if all healing magic now takes you out of the first and second stage of the death count, that means the "Cure Light Wounds" spell:
-heals you out of first and second stage, whereas "Stabilize You" only heals you out of first
-heals 2 body, whereas CLW only heals 1
-is 2 points CHEAPER than CLW

So what does Cure Light Wounds exist???

These things were separate when created. We will examine them. Thanks.