SC: some comments:

- I think a warranty row needs to be added : 5 years brompton, lifetime tikit
- time to get into normal (ailine free) suitcase for two: < 30 seconds Brompton, some 5 minutes for tikit (from youtube video)
- row for availability of replacement parts : Brompton (widespread) : Tikit - from Oregon USA
- row for product availability in marketplace : Brompton 15 years? Tikit : 3 (implying tested-ness of design)
- row for maximum seatpost extended area : both are good here, with L size tikit very good also, just to show that they both can accomodate large riders - this is NOT true for many other folding bikes; maybe minimum size leg extension too

The photo you took is misleading - it should be taken directly from above the two to show the difference of the depth from the angle you've taken. The diagonal perspective makes the two appear similar, and this is the largest different in the folded dimensions.

Gearing : this is again a poor choice from Brompton to not have had an alternative use of the 8 speed for those wanting the "vast inefficiency" in trade for the gearing upgrade. Tikit as you mention wins.

ps - I think if these rows are well defined, this could be a great place to put many more columsn with other bikes to help others make good decisions, if entries are well entered, then sorting could allow for numerical comparisons too.