From datasheet, looks like two decodes, but UART TX and RX count as 1 each, as do MISO/MOSI unlike MSOX3000 which will do TX+RX as only one of the 2 available decodes
Not entirely clear of segmented is an option - they mention "history" feature but can't tell if this is another name for segmented or something more.
No sign of Nth edge burst trigger

2- channel XYY mode - not sure I can think of a use for it but could do some nice demos..
UART decode user baudrate up to 32Mbaud
SPI decode up to 32 bits

DSOX1000 only does 16 ( can't remember of MSOX3000 does more)
Colour "rainbow" intensity display looks interesting.