SBD you get it as the exact amount of coins in STU, whereas Steem Power you get it as the $ value of STU divided by the Steem price. For instance, on a 50 / 50 ratio from 100, you would get
- 50 SBD (the exact amount in coins)
- $50 / $6 (Steem price) -> $50 worth of Steem Power.
Got it!