The simple fact is that it takes 780 keV localized on a single atomic site to cause electron-capture by a proton. WL try to explain how that might happen, but they don't admit that you only have to concentrate about 100 keV into a single atomic site to get a useful probability of fusion. So, fusion is much more energetically favored than electron capture by a proton, but you'd never get that message from a WL paper. The Coulomb barrier deceit is used to win over the likes of Krivit and Bushnell, who don't have a background in the field, but could have a certain influence among potential investors to Lattice Energy LLC.
You'd better go and change the "Heavy Electron/Fermion" wiki, then : http://en.wikipedia.org/wiki/Heavy_fermion
> The name "heavy fermion" comes from the fact that below a characteristic temperature (typically below 10K) the conduction electrons in these metallic compounds behave as if they had an effective mass up to 1000 times the free-electron mass.
OK, so that's at 10K ... but lots of interesting stuff happens in lattices, and various effects (including superconductivity) are showing up at higher and higher temperatures.
