@soix
General statements are a water of time - I agree.
You just cannot compare the two unless they are from the same manufacturer/ design. The speed may not be the chip or the R2R design and can come from other aspects in the design. SS versus tube, type of tubes, tube regulation vs SS, tube rectification, etc. Different tubes will also have different sound characteristics.
Since I design Directed Heated Triode tube DACs I prefer the sound of the R2R DAC, why because I also built the same DAC using the Sabre 32 chip DAC. Both have advantages but the R2R is more musical with a more relaxed presentation where the chip is more like being in the first five rows and hearing he music. Neither one has better speed, clarity, separation, frequency extremes over the other. The chip may be slightly more dynamic at the expenses of relation or possibly clarity but you would really have to have really good ears to hear it or spend a lot of time with each unit in your system. I have demonstrated both but not at the same time and each time the person hearing the DHT design was impressed.
Personal preference yes sir!
Nothing against what you said just trying to add some explanation to what you posted.
Happy Listening.