Well, thats not a very positive way to address the issue.
Plenty of people like the idea of the event. Its unique. But, as stated by an organizer, the issue with skyball is knowing that teams are going to likely reserve the squid and/or goldfish for the event - making it slightly dull. However, skyball has more maos to choose from which compensates that fact.
KOTH is opposite of this. It doesnt have a likely ship to be reserved becsuse all ships are very viable in that game mode. However the map vhoice is limited.
Skyball is not as fun as KOTH to the majority of players. Plus, there are far more viable options for KOTH ship choice for the majority of players. Not only ship choice, but ship builds as well.
Also, many players participate is KOTH far more often than skyball. This makes the skill level much higher for KOTH and thus a better viewing and playing experiencd.