RE: ALERT: SBD Print Rate at 1%: Everyone Posting Must Use the 100% Power Up Option... Now!
At 100% SP you get 2/0.4=5 SP (STEEM). At 50-50 you get 1/0.4=2.5 SP plus $1 is turned into 1 SBD worth 80 cents = 2 STEEM if sold on the market.
2.5+2 < 5
The inequality holds whatever the price of STEEM, so long as SBD<$1.
This is true if the second half is fully paid in SBD. However, due to the current SBD debt at (close to) 10% there is (close to) no SBD payed out. In the current state with 50/50 you'd get 2.5 SP + 2.5 STEEM, so exactly the same (in value) as for the 100% power-up setting. Both the debt ratio and the SBD/STEEM price can change within the next 7 days, so it's hard to say which payout option is really "better" now.