I finally got back home and put this side/side with my B&R Baseline. You can clearly see this is not as tall. I did not photography other dimensions because front/back and side/side they are the same.

I do not have problems with the B&R if I can put it in sideways. But on really full flights putting it in wheels in/out is a big help, and I can almost never do that with the Baseline. Also, they tout the external handle and the 'flat bottom' as a boon to packing, I think it's a gimmick. We are all used to rolling some garments, I like rolling T-shirts and underwear to put inside between the handle uprights. Then I have a pretty flat surface anyway.

I just 'retired' the B&R giving it to my wife, who loves it.