When Shockwave grabs Starscream and legit carries him and runs away from the Autobots fire. Isn't that a bit uncharacteristic of a Decepticon? Especially Shockwave, who kind of blamed Starscream for what happened to him, even if he thought it was logical. Decepticons are portrayed as killing each other in anger and every bot for themselves except to protect Megatron. The scene was funny and cute, and I enjoyed it, but I thought it was a bit weird for Shockwave.
I guess that since Starscream had a bit of a higher rank than Shockwave he (Shockwave) felt the need to protect his new leader.
Shockwave works by logic, he knows that two decepticons work better than one. He was proved right since as you saw in the Predacons Rising movie saving Starscream led to him having someone that could pick up the bones for him, accelerating the cloning proccess.
I do not even remember such a scene. "When Shockwave grabs Starscream" - I thought I would read about the scene, when ShockWave was going to make SS to lose an eye.