For match up purposes let's say the Philosopher's Stones work like Innocence and can exorcise Akuma and hurt the Earl. I do think Father has a chance, remember the premise is they had prep time. Round 1 goes to the Earl, but I do think the Amestrian scientists and Military can find a way to bring him down in Round 2. It's not like the Earl has the Ark or any other Noah tech with him in this scenario. Overall the match ups favour the Earl, but I'd be curious to see what the Amestrians would do. Let's add a Round 3, 1vs1, but Father has Truth now.