I never expect Persia to fold like that either. That is why most of my time was getting a favorable war of attrition.
What is funny - 1625 AD and Delhi was producing 71 culture a turn, with 8897 total. Magellan voyage and colusuem not built yet. We should have been able to get a 20000 point city.
I must agree our position was crappy. I was in shock when my initial 20 moves found a city border. I am glad I went for the instant war with Japan. I usually avoid early wars, as they do to more damage to a position. However, this time, I think it was key. 4 civs on our island was ABSURD!