Compare apples to apples and oranges to oranges, the closest your quoted post provides to such a comparison is as follows:
15400tx (blocksize 3.5 mb) @ vs 15840tx (segwit w/ 2mb)
It's not accurate since 3.5 mb < 2mb segwit, but none of the other numbers line up at all.
But " I propose we work immediately towards the segwit 4MB block soft-fork" (Gmax)
https://lists.linuxfoundation.org/pipermail/bitcoin-dev/2015-December/011865.htmlsegwit is 4mb.