I actually switched FROM missiles to fully kinetic after my missile fleet got its ass kicked one too many times, then I switched to one weapon out of three kinetic and watched it actually match my missiles for damage.
My kinetic fleet has been slaughtering just about everything, and the ratio really is fantastic. Against mundane opponents, my battleship Giga Cannons do a real good job of shelling the hell out of them plus huge waves of bombers that basically tear their capital ships and stations to pieces, my cruisers always have fantastic damage output, and I've already gone over my destroyers and corvettes and how they obliterated the awakened empire fleet
My cruisers inevitably get killed way more than any of my other ships against mundane opponents because they don't have the dodge of my lesser ships nor the tank of my battleships, but I always replace them because they do quite a bit of damage. Corvettes used to be objectively better than other ships, but you have to keep in mind they only decimated the awakened empire for two reasons: A. The awakened empire was spamming fancy energy lances that disintegrated my battleships but they didn't actually field very many weapons that are good against cruiser and smaller, and B. My cruisers were taking the brunt of the damage and dealing damage too.
Against mundane empires, my capital ships are absolutely indisposable, and without them and the cruisers my smaller ships would have been squashed like bugs a while ago in my perennial liberation wars.