The meme-stock mania that once rattled Wall Street now feels like ancient history — and as GameStop Corp (NYSE:GME) heads into third quarter earnings after the bell Tuesday, the contrast between the original meme twins has never been sharper. GameStop appears to be the only survivor with a credible turnaround path, while AMC Entertainment Holdings Inc (NYSE:AMC) continues to battle structural problems that no hype cycle can fix.Track GME stock here.Balance Sheet RealityBoth companies began the meme era faci ...