Helpful to whom? of all the devs I've ever met that have used CF, the most positive thing I've ever heard said about it is that "they're used to its failings and it's comfortable". I can't help but think Microsoft's tools are a much more appealing value proposition than Adobe's in this particular space.
Microsoft's tools may be more appealing than Cold Fusion or JRun, but they are still less appealing than pretty much everything else this side of Java.
At least with CF and (IIRC) JRun you are not locked into Windows...
Yeah, it's a little strange that it actually sits in the same basic ecosystem as everything else on the other side of the microsoft stack and yet manages to be worse even than the MS offerings.
Frankly even considering the vendor lock-in implicit in being wed to the MS stack, I'd take that option over CF any day of the week. That said I see no reason to choose between different degrees of poison when there's plenty of good clean water around.
