It's too cold for a back to back shooting comparison today and you can get the specs anywhere, so here are some details to give potential buys some of the details that you don't read about.
First off here's some Crossbow P*rn to see them playing nice together. Note, the Assassin wears the Bigfoot stirrup and is therefore a little longer. The overall length of the Suppressor vs the Assassin is 31.5" vs 32.25" respectfully, including the stirrup. They are essentially the same size. Weight bare is 6.6LB and 7.4LB.


There are a couple details that set the two apart aside from the obvious. First notable difference is the location of the cranks themselves. Altho the bows are under the same pressure, the location of the cranks, and the size of the cranks makes cranking them feel different. The taller location of the Supressors cranks makes the cranking effort seem less. However the lower location of the Assassin's crank makes decocking much more controlled. Since the crank is located mid stock, it doesn't feel the need to jerk around at the top as much.
Specs here are deceiving, the Assassin measure 13.75" Length of Pull, and the Suppressor 14.75".

One notable difference will most definatly be serving wear. This one goes to all Assassin's, and the latch is never lifted on decocking. So the string is released from the latch under zero pressure. Where as the Suppressor's serving does get a little abused from the decocking under full pressure.
Another very nice touch is the slight angle machined into the riser for the Stirrup. This makes a huge difference, and has been a mod performed on these bows for decades. Nice to see excal listening. Altho, not perfect, it's a really nice touch. This pic is not aligned, but from the bottom of the rail to the stirrup is greater than it appears. This really helps to get the stirrup back under the boot. Something all rope cock bows should get from factory.

I'll post more, as I play more. But my impression of the two is the Suppressor is the full blood hunting machine. The Assassin is just as deadly, but more user friendly and refined.