It started as it ended, out of nowhere and without further explanation (heh, just like the OG Kinnikuman run which revived almost everyone with the "Mask Flash" and then it ended.) Best bout indubitably were OG Machineguns vs New Machineguns, the nature of the fights turned too oppressingly one sided for too damn long that instead of perseverance of the Justice Choujin it looked like Torture porn from some really unfair bastards. Maybe they were in this nature to reflect the era of Japanese Wrestling back then, but afterwards telling a Great Story is much better than just make the MCs suffer in blood one-sidedly (ex. watch the continuing adventures of OG Kinnikuman).