How does experience gain work for tanks in Realistic Battles?

Game Discussion Realistic Battle
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1

Whether the tank is premium or not doesn’t matter.

Let’s say I have one tank with a talisman and one without. Their stat cards show the following RP modifiers:

  1. 2.38 × (100% + 100% (premium account) + 100% (talisman)) = 714% RP gain
  2. 2.56 × (100% + 100% (premium account)) = 512% RP gain

When I get a kill with the first tank, I earn about ~500 RP, while with the second tank I only get ~210 RP. How does that make sense if the percentage difference is much smaller? Why is the RP gain on tanks without a talisman almost half as much?

2

What were the kills? Like which vehicles did you kill with which tanks?

3

Second vehicle was lower br than yours probably. And/or first vehicle was at higher br.