How does the Antares' quantum enforcement device (QED) component differ from that of the RSI Mantis?

The Antares does not have a full QED, just a quantum jammer, which prevents nearby ships from using their quantum drive. The Mantis has both a quantum jammer and a quantum snare, which pulls other ships out of quantum travel. However, the Mantis does not have an EMP, like the Antares.