I agree with the above poster that QM2 is overengineered for what she does, both in machinery and size. Especially considering she doesn't do 6 day crossings anymore. That accounts for some of why she feels more spacious. But the biggest reason is that she was never built to go through the Panama Canal like Viking ships and pretty much all other cruise ships were. This means she's considerably wider than virtually any other ship you sail on. It has a lot to do with how she "feels" inside.