I think it's mainly an optical illusion, the cab of the WT is ~0.5% wider than the BL on both images.
For grins (and to test), I moved the tinted window onto the BL:
Agreed it's not perfect, but there was a BN photo I came across that seems more apples to apples. Below I'll post the link and original photo (I think that is allowed again if we include the BN logo). I then adjusted the separate vehicles so that their grills, lights, and lettering aligned and...
I may have missed an earlier response on this, but the front view was throwing me off, so I corrected it a bit in photoshop. It's still off a bit because of the different angles of the trucks to the camera, but close enough for me. Here's the images in case any one else was worried about the 33"...
If you want to keep up with their progress:
Whole Race:
http://score-international.com/2020-Races/baja1000/livetracking.html
Bronco is Class 2:
http://trackleaders.com/baja1k20i.php?name=Cameron_Steele
I'm an Architect and work on everything from tiny restaurants to custom homes to corporate headquarters. Kids are 5 and 7, and my wife is an art historian and photographer.