When ever a defeated enemy calls your actions "disproportionate", you know they have been militarily successful.
Use 50 cal against AKs.
Use Striker and M1 armor against infantry.
Use Javelin and Hellfire against technicals.
Call in CAS early and often.
The Bradley's 25 mm. cannon with high explosive ammunition is also very effective against technicals. That reminds me of the remarkable "Taxi" story from the first incursion into Baghdad by the 3rd ID. The 3rd ID had paused to regroup and reload when a taxi loaded with explosive started driving towards them. An officer was so startled that the only thing he could think to say was "Taxi!", instead of giving an order like "fire on the taxi." Just like a cab driver responding to his call of "Taxi", the taxi started driving right towards the officer, but a Bradley next to the officer blasted it with the 25 mm cannon from about 100 feet away and that was the end of the taxi threat. The account I read didn't mention any secondary explosions.