Does Roon sound better?

Roon doesn’t sound any different. It’s playing the same digital data. 

I get that, but it’s still pushing the same bits over. I guess there could be a very slight difference depending on network noise but I doubt you’d be able to tell. My point is mainly that Roon isn’t doing anything different. It’s just sending the same bits as Tidal to the DAC portion of the device. 

If you prefer the organization then it’s a grest deal, but to be clear it should sound exactly the same on a device that offers both Room and Tidal directly. It’s processing the same bits in the same way. Once you start adding other hardware and paths then sure, but in this instance I can’t imagine how it would sound any different. 

I don’t think you understand what I am saying. If you have a single device that does Tidal and Room, it will sound exactly the same playing Tidal through Roon as it would playing Tidal directly. This was the question the OP asked. 

I’m not totally sure which difference you are seeing but if the same Tidal bits are making their way to the dac then it shouldn’t matter. It could be one of those two is decoding and re-encoding, like AirPlay does. For th OPs case, sending Tidal data to the dac over WiFi with Tidal directly or with Roon should result in the exact same data stream making it to the dac.