I had this experiment backed up so I'll just leave this data here... I tested this a while ago in ssp.
Control: splash harm II thrown at wall point blank range
1. 4.5 hearts
2. 3.5 hearts
3. 3.5 hearts
4. 3.5 hearts
Control 2: shot self with dispensor at eye level with splash harm 2 pots.
1. 6 hearts
2. 6 hearts
3. 6 hearts
4. 6 hearts
Golen apple Resistance: shot self with splash harm 2 pots from a dispensor. I was wearing no armor.
1. 5 hearts
2. 4.5 hearts
3.5 hearts
4. 4.5 hearts
5. 5 hearts
6. 5 hearts
7. 4.5 hearts
8. 5 hearts
9. 4.5 hearts
10. 5 hearts