One of the general pattern in all previous Transformers series is Autobots and Deceptions firing yellow(or orange) and purple lasers at each other whenever they fight. The only other exception beside the current series is Beast Machines. Similar to BM, TFA doesn't have the gun fights because the Autobots (and Maximals from BM) aren't as designed-for-combat as the Decepticon (and Vehicons). Instead the good guys rely more on each of their own special weapon(some energy=based, so not) to fight. Many time we see the Autobots hiding behind covers from Decepticons' firepowers. Anyone misses the good and bad guys firing at each other?