Why is that a dual core iphone faster than a quad core android phone?

Why is that a dual core iphone faster than a quad core android phone?

In general it is not, but it is the old story of comparing like with like.

The thing about Android is that there are so many devices out there across the whole spectrum of the market where iPhone are only high end, in terms of pricing anyway - the specification is actually comparatively mid-range. However, if you compare a £500 iPhone with a £60 Android device it should come as no surprise which comes out on top. Top end Android handset such as the Galaxy S blow anything from Apple completely out of the water in terms of sheer performance.

By faster I assume you mean that the iphone have much more smoother interface than the android ones does have. From what I have heard, the problem with android smoothness is that it isn't build to be fast to load graphics, textures etc. Androids main goal is to load programs, data, news fast and because of this comes the smooth graphical letdown. When you open up internet browser on both devices, you can see how iphones have problem to forward the news to the user as most of the screen is grey, but at the same time androids have loaded the page almost instantly.