I've usually got a hearty appetite, but I couldn't manage a quarter of that offering - especially at breakfast time. I don't do much business travel these days but I've put away plenty of hotel breakfasts in the past. Generally 1 sausage, 1 egg, 1 rasher of bacon, spoonful of beans, piece of toast and a few mushrooms would do it from the buffet. Any more risked feeling stuffed all morning. When given a menu choice I would tend to be "good" to the extent of ordering a couple of poached eggs and beans on toast.
How anyone can put away these massive cooked breakfasts and not feel ill afterwards is beyond me!