No not withstanding that this is for a Guitar the claim was made that the sound quality was better. Which clearly it is not, unless you are saying better quality does not mean an output that follows the input.
Yes I know all about effects peddles and how distortion can be desirable, but you can not say the sound quality is better if it introduces distortion. It is a common misconception that a valve amplifier or preamplifier provide better sound. Look at the number of preamplifiers are on the high end audio market, as if they were a desirable thing.