As someone who wasn't alive for the eras that I'm quoting, please give me some slack:
King got off the bus his freshman year and scored 43 in his first game, with no 3 point shot. But I'm not sure you can compare players from different eras.
A thing to note about the 60s-80s is that the game was waaaaay faster. Essentially, a guard came down the floor, looked for a post player, and if one wasn't open, either shot it himself, or passed to a wing who took a shot. For reference (NBA, I know) the Boston Celtics of 60 years ago (62-63) averaged 127 possessions per game. Last year's champs, the Nuggets, averaged 98. It's hard to compare stats from those eras.
Also, FG %s are higher now, but FT% has remained pretty constant. It's not that players were worse shooters back then, the game was just played in a way to maximize shots, not to work a possession for the highest % shot.
All that being said, does any of it really matter? King, Ellis, Houston, Lofton, Williams, Knecht... They're all great. People of all ages appreciate their contributions to our joy and awe. It's incredibly hard to compare them due to rules and styles of play and the 3 point line, and quality of teammates surrounding them, and ncaa tournament expansions and xyz, and quite frankly they don't need to be compared. They just worked their butts off for UT.
Enjoy Knecht in the here and now. We probably won't see another for a long time.