I like both Fairly Tail and Sao, people have a problem with the high fan service in fairy tail (but I like it) lol, Sao while it could be better it is not bad I actually enjoyed watching it.
Honestly, I have no idea why folks have issues with fan service levels in Fairy Tail. I was trying to come up with Shonen series that has roughly equal or more fan service. I was about to put down Bleach.
I won't mention names. A few users here who complained about fan service in Fairy Tail - I know a few who watched High School DxD, Heaven's Lost Property, or some ecchi show I can't remember. I remember their comments in the old discussion threads. I feel they contradict themselves.