you say you do not like led zep, the beatles and the stones, so i wonder if that clouds your judgement on those bands? [you're gonna say no.]
there are bands i really don't like yet i know that they are good bands though, just not to my taste.
some bands suffer from the 'tall poppy syndrome' unfortunately.
no doubt you realize that talent isn't a defining thing when it comes to whether one band is better than another.
i personally cannot see in the slightest that those 3 groups are overrated. there are far too many music lovers around the world that would agree with me.
its a fact that there were times in those group's careers when they were simply fantastic. saying they didn't goes against common sense imo.
its the truth, whether a person likes those bands or not, its the truth.
also, if they were overrated their songs wouldn't live on like they do, or even get new younger fans in.
some people just do not like ultra-popular, mega artists, no matter who they are. the fact that they get mentioned all the time as something special simply irks them.