The weakness of size-only starship classification

Does the Backyard Spaceship series use a good size-based ship-classification system?

Pure size overlooks differences in technology and internal subdivision, although the panel's familiarity with Backyard Spaceship varies.

The answer objects to classifying spacecraft purely by size because builders can have different technology levels and approaches to internal subdivision. Similar dimensions therefore need not describe equivalent designs. Familiarity with Backyard Spaceship varies across the panel, so this is a general objection rather than a detailed comparison of that series' ships. Star Wars is also cited as an example of a size classification system the panel finds unsatisfactory.