Just look at the picture quality difference between jio livetv (iptv) and airtel iptv.
While this jio stb is connected to jio 5g mobile hotspot and airtel stb is connected to airtel fiber 1gbps connection.
Jio live tv
Airtel iptv
4x Zoomed picture showing 1/4th of the tv screen. Notice the books in the background.
Both are sd channels (Cnbc tv 18). Most of the Hd channels are in same quality in both of the stb.
This is just one example. I think jio is providing more sharp quality picture in most of the sd channels.