For example, humans. In the original: peasants, swordsmen, monks (purify). Here: peasants, swordsmen, archers (assault). Purify is no longer a chance-based ability; it works 100%. Also, the following are no longer chance-based abilities: taunt and fire sign; crippling strike (will be, but is still chance-based in the old version). Thus, for the same dwarf, the maximum number of chance-based units is 4: bears, bone crushers, priests (stun), ice dragons (stun). In the original, it was 5: pikemen (crippling), bone crushers, bears, priests (sign), jarls (wave).
Crippling strike will work as -1 to speed, with a 100% chance (and without additional initiative penalties).