The way I see it is Nightwing is daredevil with vision and gadgets. I understand DD's abilities but that statement is for the most part true. Bullseye gets taken by daredevil therefore is taken by Nightwing, he has dodged BULLETS on several occasions which is a pretty over used feat in today's comics but true nonetheless. Jason Todd is IMO on par with nightwing in overall fighting ability, where dick exceeds in skill and discipline Jason excells in ferocity and willingness to kill which makes him a good match for crossbones. Bones can most definately take Jason if suppressed with gunfire long enough as crossbones gunplay is awesome but up close Jason would just use his agility match with his knives and work crossbones, although not substantial his victory seems to me a sure thing. I also believe swapped opponents the outcome would be the same.