Coincidence?

Nuclear physics determines the Greisen-Zatzepin-Kuzmin (GZK) energy. Above 10¹⁹ eV a particle will loose its energy colliding with the Cosmic Microwave Background photons after traveling a few tens of megaparsecs. On the other hand Wibig et al. claim that at this same energy the magnetic field inside our galaxy and the intergalactic magnetic field will deflect particles very little if they come from within this GZK radius. Did somebody design a particle detector between Earth and the nearby galaxies?