it's not that these titles don't exist
Galaxy On Fire 2
Anomaly Warzone Earth
Sword and Sworcery EP
these are some titles best on touchscreens, even though they are available on other platforms, and they cannot be improved by tactile feedback (ok maybe they can, but that would involve custom buttons for each game popping out of the touchscreen based on context)
The amount of effort, the art, the story, and the over all experience is as much fun and engrossing as PC and console titles. some titles have been poached from pc and console mid development, and many good gaming studios are making mobile games (Square Enix, Ubisoft, EA, 2K to name a few). Some titles have amazing production values, Broken Age has a hollywood voice acting cast, Star Legend's concept art was made by the same guy who made concept art for Tron. Just because mobile games are accessible to a wider range of the population, and all of them do not identify themselves as gamers, does not make the games themselves any less hardcore
PS have to agree, some titles are rip-offs, Injustice on console is far superior to Injustice on a touchscreen, no energy mechanic, wider range of animations, although the touchscreen version looks better (maybe because you are so close to the action?)
Some other titles that originated on touchscreens are too complicated and unplayable on touchscreens eg: that Deus Ex : The Fall
but there are awesome titles too