I have found out that everyone from Osaka hates Kyoto. Regardless of how much they hate Osaka themselves.
No matter where you're from, everyone can find a reason to hate Kyoto. Generally speaking, people in Kyoto are pretentious twats and consider themselves the superiors of all Kansai because they were the original capitol. They particularly look down on Osakans since the city is considered Kansai's industrial asshole and full of shitbag merchant-class people and other riffraff. Basically, old families in Kyoto consider Osakans to be what amounts to their own personal servants, to provide the tools and equipment and fine foods that the superior Kyoto folks have shipped up for their own personal, privileged use. Therefore, old Osakans fucking hate Kyoto.
I spent three years working in the halfway point between Osaka and Kyoto so I dealt quite a bit with both of them, and I can tell you with reasonable assurance that there is very little difference between the two. Kansai is still Kansai and the people are all shitbags, whether they be less educated, classes shitbags from Osaka, or more educated, pompous shitbags from Kyoto.
I hate Kyoto simply because it is a magnet for douchebags from all corners of the globe (mostly Americans). Just take a stroll down the main road in Sanjo, Shijo or Gion, and listen to the conversations people are having. Pompous douchebag liberal tourists (Americans) spouting off bullshit to impress the rest of their tour group, usually nonsense about the cultural significance of bla bla bla, and the feudal history of bla bla bla, and how he/she has such a fundamental understanding of the subtle cultural nuances of bla bla bla...all the way up and down the street. When you get to the end of the road and the Kamo River, take a gander at the riverbank--covered in disgusting fleabag hippies (Americans), always with some sort of instrument or bongo drum, usually singing stupid fucking Beatles songs or attempting to sing Japanese folk songs. It looks like a cross between Woodstock and a BERNIE rally. I remember one night we saw this dumb shit, probably from Berkeley, CA, sitting on the bank playing a fucking shakuhachi. For some reason that irritated me so much my friends and I ended up shooting at him with roman candles and bottle rockets from 7-11 until he got the hint and fucked off.
Just ask any insufferable douchebag you know from back home, who's visited Japan a time or two, what his/her favorite city is. Nine out of ten times, they'll name Kyoto.