The curation rewards are included in the account payouts.

I was wrong. They were not properly accounted for. I redid the calculation properly taking into account the SBD value of curation rewards (which are all given in SP) and it sure does make a difference.

For example here is the top 50 by value of total rewards (priced in SBD):

    1)              ned  221252.729 SBD
    2)    berniesanders  173934.939 SBD
    3)      blocktrades  155225.162 SBD
    4)        dantheman  127699.751 SBD
    5)           smooth   73660.249 SBD
    6)              dan   63932.426 SBD
    7)          rainman   41479.388 SBD
    8)    nextgencrypto   39135.958 SBD
    9)        tombstone   37239.183 SBD
   10)         itsascam   36514.792 SBD
   11)    steemservices   33778.152 SBD
   12)     cryptoctopus   31395.153 SBD
   13)       donkeypong   28563.604 SBD
   14)      steemrollin   25431.552 SBD
   15)          steemed   23474.682 SBD
   16)      tuck-fheman   23041.792 SBD
   17)       au1nethyb1   19234.812 SBD
   18)            arhag   17714.608 SBD
   19)         pharesim   17646.049 SBD
   20)          kencode   16799.411 SBD
   21)            pfunk   16624.015 SBD
   22)      complexring   16493.879 SBD
   23)           clayop   13730.042 SBD
   24)      steemitblog   12464.477 SBD
   25)       masteryoda   12444.069 SBD
   26)       gardenlady   12297.124 SBD
   27)           clains   12052.594 SBD
   28)            xeroc   11787.695 SBD
   29)              aem   11490.805 SBD
   30)           xeldal   11468.997 SBD
   31)      donaldtrump   11097.241 SBD
   32)        blackjack   10960.249 SBD
   33)        roadscape   10412.497 SBD
   34)        peerplays   10392.801 SBD
   35)        steemship   10323.422 SBD
   36)           lafona   10194.434 SBD
   37)        cryptogee   10040.593 SBD
   38)     markopaasila    9918.661 SBD
   39)        riverhead    9661.961 SBD
   40)         liondani    9429.074 SBD
   41)        fuzzyvest    9400.386 SBD
   42)             team    8128.460 SBD
   43)    officialfuzzy    7984.054 SBD
   44)              svk    7977.039 SBD
   45)      nanzo-scoop    7725.603 SBD
   46)       steempower    7520.728 SBD
   47)  federicopistono    7217.921 SBD
   48)           gavvet    7122.750 SBD
   49)         mldorton    6981.682 SBD
   50)        chris4210    6952.713 SBD

Of course it is possible I made a mistake in the above calculation as well...