The D-Lite IT has a built in Skyport trigger. The Genesis doesn't have a built in trigger.
The D-Lite IT has a 5 stop range that is truly 5 stops instead of the Genesis 5 stop range that works out to be more like 4 stops.
The D-Lite IT has accurate 1/10 stop incremental controls. The Genesis has a strange curve and in various spots of the power range 10 clicks doesn't equal 1 stop and can actually only be 7/10 stop.
Also, the Elinchrom strobe can not only make use of the Elinchrom lightboxes but you can also use the deflectors, which prove to be very useful and at times very important. The Genesis does not have a central umbrella shaft and can't accept deflectors. It's definitely something to consider if you're attracted to Elinchrom modifiers.
Nothing earth shattering but it's good to know and may affect your decision depending on how important those things are to you.