While still impressive, the fact of the matter is this 747 had been stripped of all its internal fittings in preparation of becoming one of the 747 SCA (Shuttle Carrier Aircraft)... and therefore, it was easier to pull than a fully equipped jetliner
However, jetliners are designed to roll easily when on the ground - since roll resistance would mean the aircraft would have a harder time during its takeoff
![](https://i.ytimg.com/vi/G0S9iAi5lUs/maxresdefault.jpg)