The visual qualities of RO are not about having a huge epic battle : it’s how to shoot everything with a sense of wonder which is what made SW so special. Comparing both approaches of a same idea (the Vader castle scene) really is cruel for the tv show. It’s nice to have little moments such as Ben and Leia wandering in the desert, granted. We had the same thing back in 1977 and it looked more interesting. SW is spectacular by essence. We are mostly missing that with this show, and most spectacular attempts kinda fail (Reva going wannabe Smith in Blade runner city for example).
Also let’s keep in mind that ANH doesn’t look cheap and never was a low budget production.