Splitting the albedo color in the shader, and multiplying the intensity of the light.

I have a Spotlight and an object with a shader. The shader multiplies the rgb color value by a float, assuming that this value is 2, I multiply the intensity of the spot light by 2, my theory is that the intensity in the illuminated part of the object would be equal to if the value were 1. But I was wrong, for some reason the lighting is different, I do not know why.

Sorry my bad English.