Which is better for console gaming?

The LG C4. It carries G-Sync and FreeSync Premium VRR certification and a Game Optimizer dashboard. The Sony also does 4K120 over HDMI 2.1, so both handle current consoles well.

Does the Sony have Dolby Vision?

Dolby Vision is not listed for the Sony BRAVIA 6. The LG C4 supports Dolby Vision and Dolby Atmos, which matters if you watch a lot of Dolby-encoded movies.

Which has the better smart TV system?

It depends on preference. Sony runs Google TV with Gemini and works with Alexa, which suits Android and Google homes. LG's webOS 24 is fast and simple, with AI-driven picture and sound presets.

Is the newer Sony worth stepping up to over the LG?

Only if Wi-Fi 6E, Google TV with Gemini, or Alexa support are priorities. On picture and gaming features the LG C4 gives you more for less risk, since it has years of reviews behind it.

Which is easier to fit in a small room?

The LG C4 has the smaller stand footprint, about 932 mm wide versus about 1071 mm on the Sony. Both are 48-inch panels, so screen size is the same.

Do both support 120 Hz?

Yes. Both are 120 Hz OLED panels with four HDMI 2.1 ports, so 4K at 120 Hz works on either for consoles and PCs.

Sony BRAVIA 6 48" OLED TV vs LG OLED48C4PUA OLED TV

Both are 48-inch 120 Hz OLEDs with four HDMI 2.1 ports, so the picture and gaming basics are close. The LG C4 is the safer pick for gamers and movie buffs: it adds G-Sync and FreeSync Premium certification, Dolby Vision and Dolby Atmos, and a long track record of strong owner and reviewer feedback. The Sony BRAVIA 6 is newer, runs Google TV with Gemini and Alexa support, and adds Wi-Fi 6E, but it is a first-year model with less independent testing behind it.

Choose the Sony BRAVIA 6 if you want Google TV with Gemini, Alexa built in, and the newest Wi-Fi 6E wireless.
Choose the LG C4 if gaming features and Dolby Vision matter most, and you want a model with years of proven reviews.

Prices

Sony BRAVIA 6 48" OLED TV: $898.00 at Walmart (last seen Nov 13)