The Pepsi Challenge doesn't really work in Australia, because Pepsi here tastes like the HFCS Pepsi in the US (yergh), whereas Coke here is made with sugar and is much nicer.
I never really understood the point of the Pepsi Challenge until I went to the US and had HFCS Coke, which tastes much more like Pepsi. The same is true of Coke Zero, which the ads here loudly proclaim "tastes just like regular Coke". Yeah, regular HFCS Coke, not sugar Coke. Yuck.
Interestingly enough, when I used to drink Coke Classic, and tried a Mexican Coke which uses real sugar I did not like the taste compared to HFCS coke. Now I prefer Coke Zero, which tastes very similar, but when I would go back to Coke Classic I would find it too sweet.
I think a lot of it is just which taste you're accustomed to.
I never really understood the point of the Pepsi Challenge until I went to the US and had HFCS Coke, which tastes much more like Pepsi. The same is true of Coke Zero, which the ads here loudly proclaim "tastes just like regular Coke". Yeah, regular HFCS Coke, not sugar Coke. Yuck.