Seeing these toys side by side IRL it's evident that these toys are meant to be approximately all to scale with each other. Last night I placed Bumblebee, Stinger, Blackout and Starscream next to each other and some other collectors and I noticed that the cockpits/windows were all roughly to scale with each other. When you look at each vehicle and imagine a person sitting inside, you can visualise that these people would be to scale with each other.