Yes 1 x 10k = 10k but just like what Darkload Said the System gave out 10 points not 10k so in the end Darkload is right so please read the chapter again since even I can see that the amplification system only gave out 10 point and not 10,000
Ch 10 Kill the Boss. World-famous.
Tribe: I Become Invincible With My 10,000x Bonus From The Start
When was "Sacrifice" Based of Max HP last i checked there was nothing pointing that out (Chapter 6 is when he got this skill and it only said "Skill Effect: Deals 1.5% damage to enemy units within a 1-meter radius every 5 seconds.")