In the world of MUV, Xiao Ran had thrown two Dimension Devourers at Mars, wiping one of the Solar System's nine planets completely from existence and bringing varying degrees of impact to that Earth's world. But that world's Earth had not had many people left to begin with. After being ravaged by those disgusting bugs, it was no longer suitable for human survival, so it had simply been turned into a resource extraction site, while the people living on Earth had mostly been relocated to other worlds.
But Earth in this world was different. Though wars broke out frequently, it was still a relatively normal world. Mars was still Mars, and the enemy on Mars was still the enemy, but the Glatters Army was far easier to deal with than those countless insects. There was no need for Xiao Ran to throw one or two Dimension Devourers at Mars.
The Glatters Army had indeed turned Mars into their forward base for their campaign against Earth. The structures originally built by humanity on Mars had either been occupied or destroyed by them, and they had established military bases there as well.
Earth had never paid much attention to the situation on Mars. First, Earth already knew that Mars had been completely occupied by the Glatters Army, making it a dangerous place where Earthlings could no longer set foot. Second, the distance was simply too great, making intelligence gathering and reconnaissance an enormous hassle. On top of that, Earth itself was already chaotic enough, so naturally no faction had paid attention to what was happening on Mars.
The same was true for Xiao Ran. Frey and ZAFT did not have much ability to investigate Mars unless Xiao Ran came personally or sent Flying Eagle and Giant Whale over. But Flying Eagle had