I have a feeling both will fail. AOTC has always been the least popular film in the series. I didn't see TPM and I doubt I will pay money to see AOTC, but I would rather re-watch Episode I twice than sit through half of Episode II once. Episode III on the other hand, I actually enjoy, and look forward to seeing--but the Sin City sequel will capture that key older audience like me instead.
In short, the prequels will continue to fail. But it will be more than made up for with the originals. If Disney had designed this release and not Lucas they may have skipped the originals alltogether. I saw Star Wars six or seven times in 1997, and I will probably see it the same amount in 2014.