in terms of stealth, battle I.Q, intelligence, experience, training, speed, gadgets..Shay wins. in terms of strength, durability, and endurance..connor wins. so Shay would win all the way.
What happened after was Prime got resurrected by the Matrix of Leadership, he nearly killed Megatron by blasting half of his face off by Megatrons fusion cannon. Prime then chopped his right arm off and sent him away with Jetfires cannon. Then Prime killed the Fallen