I got a laugh at the semantics argument (no offence intended guys) because I'm going through exactly the same thing on a major job I'm doing. The Contractor has installed a gigantic version of what is shown in the picture.
But, when I pointed out that it's not properly sized per the wireway rules, he tells me that it's a pullbox. When I point out that it's not sized properly as a pullbox, he tells me that it's a wireway.
Maybe there's a need in the NEC for a new Article covering Wireboxes and Pullways, where the height is sized as a wireway and the depth is sized as a pullbox.
I LOVE THIS JOB!!!!
