Since specials are your only concerns, some math for specials:
It basically comes down to 3 (1%) crit against 0.5 weapon damage and 1 agility, I'll assume that it gives about 0.2% crit, and 2 ap. 2 ap give about 0.24 nominal weapon damage (1.7 * 2/14) which results in a total 0.74 nominal weapon damage (0.5+0.24). That leaves us with 0.8% crit against 0.74 weapon damage. 0.74 weapon damage gives you 3.49 increased ambush damage and 1.9 increased mutilate damage (0.74*4.7 and 0.74+0.12*2.2).
0.8% crit increases your average ambush and mutilate damage by 0.8%. That means the damage from crit exceeds the damage from weapon damage and agility if 0.8% of your damage is greater than 3.49 for ambush and 1.9 for mutilate.
Ambush beats 3.49 at 436.25 (3.49/0.008) and mutilate beats 1.9 at 237.5 (1.9/0.008).
This means he your ambush does more than 436.25 damage and your mutilate does more than 237.5 HS beats scout's for dps with specials. All numbers are before armor and resilience. Feel free to correct me.