Contrasting Inflation Targeting with NGDP Level Targeting

Given the recent increase in the number of articles or blog posts on NGDP level targeting (see, for example, here, here, here or here), I thought it would be useful to post an essay I wrote at the end of 2014 that compared NGDP-LT to inflation targeting. The piece is empirical, but I think the visual evidence is compelling,

Which is more reliable-1