The difference is that, as far as I'm aware, there's no current media/internet noise about United operating to a 'negative profit' business model. Our debt has gone down over the last couple of years. Yes, there was the possibility of us going bust at one point but then Thompson turned things round and our total debt has since gone down.
Unless you cut your outgoings or increase your income, your debt is only going to get worse. £1.5M this month, another £1.5M next month, paid back from the season ticket money. Next year's issues then start a couple of months earlier and so on.
Remember those shouts of 'Rangers are a debt-free club'? They never were and it's only going to get worse.