I don’t like ColdFusion. Its “tag” structure is like a deliberate mocking of MCV architecture, and its terminologies and syntax are clumsy and misleading. It’s missing a LOT of helpful functions, and isn’t especially well documented. That being said it CAN be used to build pretty much anything that you want it to do, if not as elegantly as you might prefer.

Unfortunately there are factors that you haven’t taken into account.

Here is a big one: Do you have any idea how hard it is to get skilled ColdFusion developers? PHP developers are common, and in many cases highly skilled, but ColdFusion skills are very rare. That means a lower overall level of skills, with too many people having to “pick it up as they go” after being poached from other languages (principally PHP, but also JSP and ASP).