If I am right about this, you may be missing out big time!
A few hours ago I received this payout:
227.359 SBD, and 97.163 STEEM POWER for papa-pepper/the-gift-that-hopefully-keeps-on-giving
I'm thinking that although steemit takes the fluctuating price of STEEM into consideration when paying out STEEM and STEEM POWER, it may be a different issue when SBD is involved. As our wallets say, SBDs are "Tokens worth about $1.00 of STEEM." Last I knew, they are pegged to be worth about $1 USD.
At the moment, STEEM is worth about $2.63 USD and SBD is worth about $2.03. I do not think that this would cause the payout of STEEM POWER for my post to be 2.3X less than the SBD payout (97.163 SP vs. 227.359 SBD). The total payout for the post was $513.67 of which $454.72 was my portion as the author.
I just took that 227.359 SBD and went to the market in my wallet, where I purchased 174.74 STEEM for it and powered it up.
Now, that post got me a total of 271.903 STEEM POWER. If 50% of the post payout was worth 97.163 SP, how could the other 50% be worth 174.74 SP?