How many more rebounds did Johnson average than assists during his championship series against the Sixers?
return Johnson ;return rebounds of #1 ;return assists of #1 ;return #2 during his championship series against the  Sixers ;return #3 during his championship series against the  Sixers ;return number of  #4 ;return number of  #5 ;return the  average of #6 ;return the  average of #7 ;return the  difference of #8 and  #9
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