Just a question on the above,

"A 3.8$ value would result in 2.85$ after curation and then in:

2.14 SBD
0.713 STEEMPOWER"

I'm pretty sure on 50/50 rewards, the SBD is usually exactly half of the $ rewards figure, ie 1.42 SBD in this case.

While the steem power rewards (from what I've reasearched) is the other half of the $ reward figure for the post, divided by the USD cost of steem at the time of payout. ie. lets say in 7 days time the price of steem is 3.50 USD, then the Steempower reward for the above should be 1.42/3.50 = 0.406 steem.

I could be wrong on this, but this is what I've observed.

Steem power was intended to be the token which would fluctuate, hence the varying value of steempower reward, while the SBD was supposedly intended to be more or less tethered to the value of the US dollar, which has obviously gone out the window through some sort of manipulation by whales.

So from your example above, using $9.5 as the SBD and $3.2 as the Steem values, if someone were to pay 5 Steem for an upvote, the vote value (deteremined by your ratio) of $2.85 (after curation) would result in 1.42 SBD and (1.42/3.2) = 0.44 Steempower.

So 9.5/3.2 = 2.97 steem per SBD

Therefore, the rewards are (1.42 x 2.97) + 0.44 = 4.657 Steem

4.657 Steem x $3.20 = $14.90 USD

Considering the customer is paying $16 USD dollars for this upvote, he/she is actually losing just over $1 USD