Might be a controversial suggestion: Mohammad Reza Pahlavi vs Puyi
I remember I saw a post about that is a map about the distribution of historical figures ERB has used and most of them are based in United States and Europe. So I tried a matchup that has no European/American historical figures.
Both are the last monarch of their respectively countries and are perceived as leaders of a puppet state (Imperial state of Iran and Manchukuo respectively).
I don't think ERB will ever do this as I feel like the Iranian conflict (especially due to recent events) and the Japanese war crimes (which Puyi is indirectly related to) might be too heavy. I feel like it might interesting if it is more educational than entertaining (like Jefferson vs Douglass) but idk. Furthermore I don't think your average ERB audience know these guys. I feel like they might be too similar as well.
What do y'all think?