I recently read the following article: It was not very long, and it did not contain much information. However, after a little searching I discovered the article was referring to GRB 130427A. The key features of this GRB are its strength at 94 GeV, and its duration at "better part of a day." Also its distance of 3.6 billion light years puts it relatively close by for a typical GRB. While searching for more information on this particular event I also encountered this paper: Detection of Pulsed Gamma Rays Above 100 GeV from the Crab Pulsar --- arXiv:1108.3797 They were detecting gamma ray pulses in the 200 to 400 GeV range. Furthermore, these GRB had to be at least 10 solar radii from the surface of the pulsar. Granted, pulsars are neutron stars with a radius of maybe a dozen miles. So at 10 solar radii we are not talking about a large distance. Also, the Crab Nebula is only 6,500 ± 1600 light years, which is considerably closer than 3.6 billion light years. Is it the strength and the distance of the GRB that determines its power? In other words, if GRB 130427A were measured from a distance of 6,500 ± 1600 light years, instead of 3.6 billion light years, would the power of the GRB be significantly larger than the gamma ray pulses of 400 GeV being detected in the Crab Nebula?