There is no doubt that they were the worst in winning percentage (.106) and total wins (only 7), but you have to be a bit concerned when they didn't get a chance to run out the whole string and possibly win two or three meaningless games at the end of the year to avoid infamy (generally, team trying to avoid the 9-73 mark have won a few games at year end).
Let's look a little more closely. Subjectively speaking, the worst team I ever saw was the 1992-93 Dallas Mavericks. They ended 11-71 and won their final 2 games to get there. Looking at their Game Log, they were also 7 and 59 after 66 games (having won game 66 to get that 7th win).
The Mavs were last in the league in virtually every category, lost by an average of 15.2 points a game, and had Derek Harper, a rookie Jimmy Jackson (he sat half the year and shot 39%) and a bunch of guys on their way out of the league.
The Bobcats are last in the league in virtually every category except scoring defense (27th of 30) and they lost games by an average of 13.9 points. They have no one on their roster who another team would want for a starter. Their #2 guy for PER this year was Derrick Brown. They have no one on their team who had a 15 PER (which is supposed to be league average).
The edge at the top of the roster goes to the Mavs -- Harper and Jackson would be head and shoulders above the Bobcats' best guys (Gerald Henderson, Corey Maggette and Kemba Walker). The edge at the bottom of the roster, amazingly, goes to the Bobcats.
Look at the Mavs' guys after their top 2 - most never played appreciable minutes before or after their stint with this awful team:
|23||Steve Bardo||G||6-5||190||April 5, 1968||1||University of Illinois at Urbana-Champaign|
|40||Walter Bond||G||6-5||200||February 1, 1969||R||University of Minnesota|
|30||Dexter Cambridge||F||6-7||224||January 29, 1970||R||University of Texas at Austin|
|44||Radisav Curcic||C||6-10||275||September 26, 1965||R|
|43||Terry Davis||F-C||6-9||225||June 17, 1967||3||Virginia Union University|
|35||Donald Hodge||C||7-0||230||February 25, 1969||1||Temple University|
|41||Brian Howard||F||6-6||204||October 19, 1967||1||North Carolina State University|
|13||Mike Iuzzolino||G||5-10||175||January 22, 1968||1||Saint Francis University|
|23||Tim Legler||G||6-4||200||December 26, 1966||2||La Salle University|
|20||Tracy Moore||G-F||6-4||200||December 28, 1965||1||University of Tulsa|
|31||Walter Palmer||C-F||7-1||215||October 23, 1968||1||Dartmouth College|
|45||Sean Rooks||C||6-10||250||September 9, 1969||R||University of Arizona|
|34||Doug Smith||F||6-10||220||September 17, 1969||1||University of Missouri|
|10||Lamont Strothers||G||6-4||190||May 10, 1968||1||Christopher Newport University|
|52||Randy White||F||6-8||240||November 4, 1967||3||Louisiana Tech University|
|20||Morlon Wiley||G||6-4||185||September 24, 1966||4||California State
University, Long Beach|
The final analysis -- the Bobcats were worse. When you have two very good NBA starters like Dallas did and you are able to at least win 5 of your final 16, you are better than the Bobcats.....not by much, but by a little.