DT enemy in DMC3 gets significant boost from stun resistance (1) compared to their regular state. It also seperates the values of their regular stun and knockaway where every enemy has it's own resistances and every Dante and Vergil has its own stun and knock away values. Usually enemy's stun and knockaway counters have the same values and most moves have the same amount of stun and knockaway points.
This is a type of DT enemy launching where it can break an enemy's knockaway counter. This can only be done with any attacks that goes torwards this counter such as Stinger and Hightime
Demonstration of Sloth Launching with the values by MIZUKI
Example of Sloth Knockaway from Stinger by BeeG
Second type of DT enemy launching that can only be applied while an enemy is in the air. Any attack properties will count toward this including the knockaway counter. This is the main reason where players can double launch a DT enemy by first setting off the Stun Launch counter with a launcher then follow-up with knockaway counter.
Example of Stun Launching by AutoMash.
Example II of Stun Launching by Oscar Josue.