[oblomov]

Perhaps they see the prosperity of Europe, and correctly attribute it to (vestigial) Christian values.

Not likely, but possible.

[Cronos]

One cannot state the prosperity of Europe and attribute it to Christian values -- that opens a whole bunch of incorrect assumptions:

• Europe was pretty poor in comparison to the Islamic world or the Indian continent or China-Far East right up until the 1700s -- so in 1590 looking at Europe and comparing to the riches of the Moghals, the prosperity gospel's message fails
  
• There are many other non-European Christian countries that have no prospered despite their Christian values:
  1. Georgia and Armenia were Christian right from the 300s, well before Germanics or Slavs and yet were poor due to various reasons
  2. Ethiopia was Christian well before much of Europe, but again, for the same reasons as Georgia (Moslem attacks) was poor for a long time and is still poor
  3. Kerala in south-west India was and is Christian right from the time of St. Thomas the Apostle who preached there and was relatively prosperous, but not much more than the local Hindus or Jews
  4. The Naiman mongol tribe (Genghis Khan's wife's tribe) were Christian, Assyrian Christian from at least the 7th century, but were obliterated by Timur-e-Lang
  5. The Assyrian Church of the East, at one point (in the 9th century), the largest Church in the world (1/3rd of Christendom, spread from Iraq to Mongolia to India to China) died at the hands of Tamerlane (timur-e-lang) who committed genocide against them, leaving only the remnants in Iraq, the Assyrian Christians who last eyar were thrown out of their homeland in Mosul by the Islamic state
  
  
• People converting to a religion because the proponents are wealthy are not really converting by any means and it is a false conversion
  
• These people will be hit by secularists who condemn religion as keeping people in poverty