Sort:  

This is because the system recognizes SBD as being worth $1... In the case that SBD is worth $1, then yes, you do get exactly 50/50 of whatever the post is valued at on the Steemit interface. But, when the SBD price is higher than $1, then the value of your earnings (should you sell/convert your SBD) will reflect this inflated price.

Coin Marketplace

STEEM 0.18
TRX 0.24
JST 0.036
BTC 95282.29
ETH 3279.60
USDT 1.00
SBD 3.07