Ok so they say that small file compression is achieved via a training step to produce a dictionary for subsequent compression/decompression cycles.
For this to work either you need the library to include all of those models, or you have to transmit those models at least once so they can be cached by the recipient.
I don't see why any of the other compression schemes couldn't also use that type of bootstrap mechanism. Obviously it would not be binary compatible with the baseline libraries, but it's seems disingenuous to claim a huge improvement if the bulk of it is coming from just that.
For this to work either you need the library to include all of those models, or you have to transmit those models at least once so they can be cached by the recipient.
I don't see why any of the other compression schemes couldn't also use that type of bootstrap mechanism. Obviously it would not be binary compatible with the baseline libraries, but it's seems disingenuous to claim a huge improvement if the bulk of it is coming from just that.