Dont forget the dot pitch! -
http://en.wikipedia.org/wiki/Dot_pitch
LCD/LED TV's have a larger(wider spaced) dot pitch, in short, the RGB dots that produce the image is further for one another, meant for further viewing where it wont be visible (aka "10 foot user interface"), where as a computer monitor, they are close to one another, meant for close up viewing, in both, if you get too close, you will see pixelation, google that, only with computer LCD's, that isnt visible until you get less than <10cm close, obviously, LCD TV's are not meant to be viewed at 1 meter or less.
Another aspect to look at, is the resolution, sure, playing a game or watching a movie will be awesome on a large display, but things like word processing, or reading small text, is going to suck(again, that darn pixelation), thats where Kylo browser comes in, for web surfing at least.