Simply explained
An even and higher mix of blue and red gives a higher score than only one color. In certain scenarios a lesser amount of total red & blue hearts, but in equal amount from each one, could regenerate more end score than one with more hearts in total but which has imbalances.

A mathematical explanation
Let B be blue hearts and R be red hearts.
Total hearts: T = B + R
Balance factor: β = 1 − (B − R) / T
Score incl. rounding: S = ( T × (1 + β) );  r( = ( 2(B + R) - (B - R) )
Perfect balance (B = R) gives the high multiply.

• Person A
  • Blue = 50
  • Red = 0
  • Total = 50
  • Balance = 0
  • Score = 50 × 1 = 50


• Person B
  • Blue = 20
  • Red = 20
  • Total = 40
  • Balance = 1
  • Score = 40 × 2 = 80


• Result
  • Person B has fewer hearts (40)
  • But gets higher score (80)

* Here one needs to think in strategic ways to raise the rank, here using the brain and not fast & easy emotions *

Also a detailed explanation
To "Heart-Rate" now was solely an own idea/expression sprouted from the need of more stable, interesting, and fun platforms for e-Books & .txt.
Thus, this fair rating-system works because "red" shows support and "blue" shows pushback. When a post gets both, it means people are reacting across the spectrum - not just one side - where a single red heart signals agreeing in content but not in writing style, and a single blue one means that the person can't agree on the topic but appreciates the narrative of that text. Balanced reactions signal real reach and conversation, reaching excellence, so they earn a higher score than one‑sided applause.