Sun Network has the largest Kannada movie library on the planet and have no skills in organizing it. Blockbusters and superhit movies are aired on Udaya TV only. Udaya Movies rarely airs new movies. It sticks to movies that have been released in 70s, 80s and 90s. However, since these movies are good, they have a lot of re-watch value. With advent of useless mega serials and countless repetitions of the same on GECs, people tend to pass their time with Udaya Movies and Udaya Comedy.
On the other hand, Star Suvarna Plus is a lost and confused kid. It was launched as a secondary GEC, aired some original content (like 20%) in the beginning, then acted as backup channel and aired re-run of oldest suvarna programs, then started telecasting movies which were never released in theatres, B-grade, masala movies during midnight, losing the channel value, then started to air some 'okay' movies in day time with lowest picture quality, then became a kannada substitute for star sports. This channel has seen the wrath of the management and probably isn't even considered to be a competition to any channel in the market. There is literally no focus on this channel except for the logo and graphic elements by Star.
Public movies is something I don't know about because I haven't watched it. Appears to be rubbish considering the ratings and the content.
Comparing Udaya Movies and SSP, UM gets 6/10 and SSP gets 1/10. Udaya Movies is the only proper movie channel in Kannada as per me.
Viacom has brains and so do their channels in kannada. I honestly had thought Colors Super would become another SSP but this turned false. Their channel packaging, programming, exclusive content and all have made CS's place solid in Karnataka. The ratings go sky high for Super when a new Bigg Boss season starts. This keeps both Colors channels in the top. Their interactive programming has paid them well. Encashing this popularity, they are now going for CKCinema which would have also involved lot of brainwork. The movie library they have is small compared to Udaya but they have many new movies in their pocket. With proper lignup of movies and aggressive approach to capture the market, I believe they have everything they need to be number one in movies segment of channels also. They would beat Udaya Movies easily if Udaya still sits idle about the status of 'Udaya News'. (I hope they convert Udaya News to Udaya Classic/Life to air old movies and make Udaya Movies as a contemporary movie channel).