Clearly diversity in funding is a much better idea. Many of the mainstream fusion folk have been making the same claim. Personally if we are serious about our energy future (and by future I mean >100 years) then some serious money should be put into energy and in particular nuclear (yea.. both fission and fusion–we want something that burns bombs 🙂 ).
Also the energy per neutron is a awful metric, I think beam target neutrons sources do much better for example, and IEC probably do better as well. Neither is going to lead real energy output.