The 40L2456 supports a 2160p video mode which is better than most TVs of this age and type. Most TVs that have been on the market for around the same time as it support a 1080p video mode. In addition, this television support 1080i, 480i, 480p, 576i, 576p and 720i and 720p video modes.
This television's video mode (2160p) is actually the best supported video mode amongst all TVs of a comparable age and type to the 40L2456.
The worst supported video mode amongst comparable types of television is 480p.