Ah, but it's only lower in height with the cargo arms retracted. I assume the point would be running cargo through hard or less accessible jump points.
Actually, it's higher in height than the freelancer, but lower in width...even with the arms extended. The height is also a smaller dimension than the freelancer width Now, unless the jump point is oriented one side up, height and width should be very similar, so as long as the width and the height are both smaller than the freelancer's width (those wings are wide), it should be find in the WxD dimmentions. However, it's significantly longer 49m vs 38m. That could cause a significant issue.
Both in LxWxD
Freelancer Dimensions: 38x23.5x9.5 66 SCU
Hull B Dimensions: 49x16.5x17 384 SCU
Hull A Dimensions: 22x8x4 48 SCU
Freelancer Max: 38x36x9.5 120 SCU
The Hull A only carries 48 SCU of cargo, but it's also classified as a "small" ship. Both the Freelancer and the Hull B are medium ships.
If we go by the 2015 video, vs the other lore we've heard about the freelancer being the biggest to transverse the small jump points, then the Hull A would carry the most cargo through a jump point. Otherwise, get a freelancer or even a cutlass.
Now, if the MAX fits through small jump points, I would put a small amount of money on the Hull B being able to do so. If it's only the freelancer and not the MAX, then I would give it even odds.
Small note, if you look at the holo viewer of the Hull B, those need to be 6 SCU containers for the math to work out. If those are only 1 SCU containers, then the Hull B will only hold 64 SCU of cargo. Two less than the Freelancer. I suspect they will be somewhere in-between