The majority of Confederate alternative history is flawed and misleading. Alternative history on any period requires a good understanding of the period. For example CNN & their hateful Mr. Roland Martin projected the commonly ignorant assumption that had the Confederacy won the War against the States slavery would still exist.
However the most likely outcome of 6% slaveocracy minority in the South should be based on historical events and characters. Consider:
*By 1865 more than 90,000 blacks were serving in the Confederate military as freemen.
*The unpopularity of slavery influencing the Confederacy's diplomatic and economic relations with nations that Southern state markets relied on (ie, UK, France, & if the Confederacy was victorious the U.S.)
*The role and security of slavery in the South was forever broken (one way or another).
*Citizens, officers, and soldiers in the Confederacy like Jefferson Davis, his cabinet, Lee, and Johnston expressed that slavery would be a necessary loss for victory.
*The majority of Southerners from the period rejected slavery as a cause (though the abolition of it was 1 Federal measure to restructure the South by force)
*The Confederate States rejected the deal that would achieve a slavery amendment (the original 13th) if they reunited peacefully with Lincoln.
*The Confederate States rejected the deal in the Emancipation Proclamation which offered that any territory not in rebellion by Jan 1, 1863 slavery would not be intefered with.
*The Confederate States Constitution forbade the international slave trade.
*Every nation in the Western Hemisphere with 1 exception abolished slavery peacefully.
*The industrial revolution which influenced all parts of the globe made crop harvesting more profitable by machine than man.
*The widely changing views towards human bondage in the 20th century would surely have affected the Confederacy as it did with the majorities in the majority of civilized nations.