'1.6 * 0.75 = 1.2$ of this vote is given to you as SBD. SBD is currently worth 9.5$ on Bittrex'

This is totally and utterly false, it's 1.6 x 0.5 given as SBD.

Do you not look at your own rewards and compare them with the $ author reward amount on the posts??

Also, do you not see the little selection box below where you type with rewards : Default (50%/50%) ?

Also, you may have noticed that your steem power rewards haven't been 25% lately either.....