That’s because, canonically, you likely aren’t going to the exact same spot. This is where game design and lore collide and the game design tends to win. Especially when it’s an area that doesn’t really amount to much lore wise. Using the same map for both teams makes it easier on players and devs, Half the maps to memorize for us and half the maps to make and balance. The lore has covered the pros and cons of Gambit and there is zero mention about other worlds and other Guardians. It’s all spoken about as if it’s our people on both sides. Think of it like this. Where is the canonical explanation for multiple copies of one of a kind exotics? Not everything can be explained in lore. We got to give some wiggle room for the game