If I remember correctly, the original was like this too. I always used the sloop and would often beat much larger ships.
A sloop’s guns were generally so light the balls would bounce off the hull of a ship of the line. The sheer weight of firepower in return would shred a sloop to pieces. Add on to that the fact that heavier guns can achieve longer range when trained at the right angle, and a sloop can’t really get anywhere near a ship of the line and live to tell the tale.