Try cutting a seat belt or thick cardboard with a saw vs a serrated blade. One will run circles around the other.
Silky saw begs to differ. Those things are nuts.
Serrated knife is the bastard child of a saw and a knife.
There are some benefits, but the benefits are dramatically reduced when comparing serrated vs toothy plain edge. Say like a 60 grit stone.
Serrated will stay perceptively sharper, mainly due to the effectively longer edge and changing angles of attack.
Downside is they are an absolute bitch to sharpen.