In terms of which TV is better, the refreshed specs of the G4 do position it as the superior device in this comparison. However, the decision to upgrade from the LG G2 OLED to the LG G4 OLED does just boil down to your specific needs and priorities. If you crave the latest in display technology and demand the best possible picture quality and performance, the LG G4 OLED undoubtedly delivers. Its higher peak brightness, enhanced refresh rate, and support for HDR 10+ set it apart as a formidable contender in the OLED TV market. But, if you're satisfied with the performance of your LG G2 OLED, and don't require the additional features offered by the LG G4, you might be able to hold out on upgrading for a couple more years to come.