If you were a kid in the 90s, whether you owned a Sega or a Nintendo wasn’t just a question of preference - it was a vital part of your identity. And the question of which system was better was important enough to start playground fistfights. Surprisingly, as the trailer for the upcoming CBS All Access documentary Console Wars reveals (via ET), the rules were very much the same for the adults behind the two video game giants. Produced by Seth Rogen and Evan Goldberg, the documentary details the explosive feud that developed between Nintendo and Sega in the early …