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You can tell the author doesn't know anything about Gundam when they confuse mobile armors like the Big Zam and Neo Zeong with mobile suits. And how does the Sazabi (which it isn't even a Gundam) get ranked at 4th when it lost to the 5th ranked Nu Gundam? And as for the weakest, the Zaku Tank shows up before RfV, it was in the 8th MS Team.