And USB-C supplies can also switch voltages, so the efficiency will also depend on the voltage (both input and ouput, as this can probably be used in both 110V and 230V grids)...
It's just marketing... "up to 93%" :)
What made it even more interesting is mentioning Weltrend in a marketing material, almost 50% of projects I used to work on include a cost down part to switch from TI chips to Weltrend or similar. Whoever wrote this material doesn’t understand what they really implies.
Crude measurements with a ruler indicate that Framework's unit is approximately 23% smaller by volume.
I don't know how far this field moved forward over the past three years, but I see this as a win - mine is especially annoying to handle due to its length - ~150mm.
Would love to know something about the weight, because that thing is a brick, which for this reason I don't normally take along with me on trips and opt for the 60W USB-C charger instead.