FWIW, my personal experience with Kodak's BW400CN is that, although it does require longer exposures and higher contrast than regular B&W films, it's not really hard to print. Given that other people have other comments, I suspect some radically different things are going on -- maybe it's a matter of personal standards, or differences from one paper to another (I've mostly printed on Agfa MCP310RC), or differences from one enlarger to another (I've got a Philips PCS130 condenser enlarger with PCS150 color unit).
I also once tried a side-by-side comparison of printing this film on RA-4 paper vs. B&W paper (the Agfa, IIRC). The RA-4 print produced slightly more subtle gradations of tone and was generally a bit more pleasing, but it was difficult to get a neutral tone, and I didn't quite succeed. I got close enough that the print didn't jump out at me as being badly off unless it was put side-by-side with a conventional B&W print. I don't shoot a lot of this film, but when I do I print it on B&W paper because I find this easier than doing it on RA-4 paper. I suppose if I got a really extraordinary photo on this film I might put the effort into trying an RA-4 print from it, given the results of my side-by-side test.
Personally, I prefer the Ilford XP2 Super, but that has more to do with the look of the finished prints than with the ease of making prints. This is subjective and hard to describe; I just prefer the look of the XP2 Super.