Okay, so where did the 200 mil go? Is it possible that the land needed a lot of work. Wasn't there a canal or some water there that had to be rerouted, some other foundational issues to address? Sure, 200 mil is what TSL is - and it's not seen in the final product...but the journey.
If the same "land" went into your local Six Flags in a fraction of the time, I'd argue that there wasn't as much infrastructure needs to address as in DHS (don't know, just guessing).
Also, and this doesn't justify the price tag, but TSL is meant to be the "younger brother" companion land to it's "older brother" SWL.