One thing to note about that. Unlike the Ark being the Autobot's Earth base, the Nemesis wasn't the ship that the Decepticons used as their Earth base.
That maybe so, but the Victory (I believe its called) was pretty much the same basic shape and type of ship as the Nemesis, thou I wonder why the Autobots never decided to build a Ark 2 during G1, unlike the cons, they could of salvaged much of the original Ark parts and get aid from the humans on Earth, then again, one has to wonder what the real state of the ship was after 4 million years stuck in the side of a mountain, aside from cobwebs, were any parts of the ship falling apart due to Earth's atmosphere?