Thank you.
In all seriousness, though, non-Mega Charizard already runs that set in Gen V's NU tier, and Mega Charizard Y is just normal Zard with slightly more offensive presence and an ability that only increases one of his STABs instead of his Special Attack . Also, Charizard's special movepool is crap, his STABs give horribly redundant coverage, and Focus Blast is necessary if you don't want to be walled by Tyranitar and Heatran.
EDIT: Aura Sensei, Zard Y is actually worse than Ninetales as a Drought user, since its still x4 weak to Stealth Rock and can't even hold the weather stone to increase the duration of sun (meaning he will HAVE TO SWITCH OUT).
that's why you run a spinner or defog user when you use charizard y (although spinners are usually better if you're running hazards). at least zard y can do something with the sun it brings, rather than simply be switched out right after setting up sun, like ninetales has been used. with the weather debuff, you need to take advantage of EACH turn of sun you have. remember, it has 159 spa, meaning, it can actually hurt things unlike ninetales, and, since it gains drought through mega evolving, it is able to keep the sun alive on the initial ttar switch-in, or any other weather setter that happens to switch in.