Ahah, Harry, you have met the first law of tent selling. The only accurate way to compare weights is like with like.
i.e. minimum versus minimum and maximum versus maximum. The problem is that some shops / sites quote one and some use the other system...confused? You will be.
min weight - the one some people quote: tent, poles, nowt else. Not a sausage.
max weight: tent, poles, guys, pegs, stuffsac, pole repair rods, patch repair kit, spare guys, bottle of wine.
In between is a more sensible 'everything you need but no frills weight' quoted by some. Now the Salewa site quotes the Bergen as 2.6K I think, but the all-inclusive package may well be over 3k. But Bob weighed ours some time back when we were sharing the load for a backpack and it was 2.7K including tent, pegs, guys, stuffsac, poles. It's not exactly the same as the Bergen, the zips on the Bergen are better than ours, more curvy, but it's the same size and updated same model-ish and same make.