>>103111115A lot of batshit propaganda sites that only exist to proselytize by speaking in vague terms isn't going to somehow erase the countless innovations and achievements non-Christians have achieved over the millennia.
If Christianity alone was some sort of "magic ingredient," it would result in instant, obvious, clear progress everywhere it was introduced. When it doesn't, people who believe in this particular invisible spirit handwave, equivocate and move goalposts to somehow justify how no amount of empirical evidence can ever prove them wrong, which is what every cult or, fine, dogmatic, inflexible ancient religion says.
Early Christendom itself revered the culture, structure, art, science, and other innovations of pagans, and considered ancient Greece a foundation of Western civilization.
Meanwhile, if you're talking about something like scientific progress, the fact that scientists are so much less likely to be Christians than the general population is a pretty significant problem.
http://www.pewforum.org/2009/11/05/scientists-and-belief/The Enlightenment and modernism were about moving away from Christian fundamentalism and literalism and towards empirical evidence and the scientific method. I would argue we owe recent achievements to this mindset rather than picking one of the countless ancient superstitions or books from centuries or millennia ago and somehow trying to apply them to the modern world despite no evidence that we should, or which of the thousands and thousands of spiritual believes is the "objectively true based on scientific, empirical, concrete evidence" one. Even if you get into morality, obviously the Greeks spent a lot of time talking, writing, and thinking about ethics and Christian cultures condones countless things that we consider evil or immoral today (torture, slavery, prostitution, etc.) so that's hardly a clear-cut "gotcha" either (nor is Greek plays, Shakespeare vs. Christian morality plays).