I think it's fair to compare because big box stores don't have to be built that way if cities don't want them to be built that way (due to the negative externalities), and because of how little parking lots are assessed.
The Home Depot in Lincoln Park and the South Loop are more intense uses of land because they have parking above the store. The Target on Elston has two distinct parking areas...a surface lot and a garage! But the parking doesn't contribute to the property's value while at the same time it detracts from a city's value.