In the unmodded game, I feel it's too devastating when we fail a world wonder race. Most people don't describe that as a fun experience. I increased the second-place compensation to make it less bad. Firaxis made the strange decision to reuse the wonder gold modifier when they added the ability to sell buildings, so the two share the same values. When I have time, I intend to reactivate a feature from Gem which allowed me to separate those modifiers, keeping wonder compensation high and building sell gold low.