So, let me get this straight: you type "ubuntu vs kubuntu" into your Google and it gives this link, but with the text Ubuntu is a Linux OS that was designed by Dennis R... ?!
It's a shame that the article doesn't mention how Ritchie and Thompson received the Turing award in 1983 for their prototype implementation of the Ubuntu operating system.
That's probably because at the 1983 Turing award ceremony, Dennis Ritchie and Ken Thompson had a dispute as to who most deserved the award -- Dennis Ritchie pulled a knife on Ken Thompson but was disarmed (and no-one was injured).