Stating 5 reasons why Android is better than iOS was difficult... Because there are way more than 5 reasons :P But still I tried to come up with basic 5 reasons, which even a layman would understand, which makes Android better than iOS!
5) Removal battery and USB storage - If you have an iphone, you can not remove your battery, nor can you remove an sd card (simply because there is no sd card option/slot in iphone). So it becomes difficult to reboot ur iphone, and also with no SD card option, you have to SYNC with Itunes everytime you want to transfer every single file! Thats 1 of the reason people hate Iphone. Android gives you the easiest way to transfer your files onto ur card or phone, with no troubles what so ever! Also with removable battery, u can always have a battery backup!
4) System wide file management - In Android, the entire user partition can be accessed by file managers. You can view all the files in your phones, along with system to user files, drive wise! You can easily manage your files, cut, copy, paste, new folder, new file, etc. Iphone sadly has nothing like this!
3) Interface - Android has ever increasing number of live wallpapers, widgets, home screens, customizing options.. Notification bar of Android is such a useful thing, even iOS 5 will have it in future. Thus Interface of Android is way better and exciting. for instance, download GO Weather app, n its themes and your phones interface will sync with the weather of ur city automatically, and it will rain in your phone if its raining outside, snow in your phone if it snows, or it will be sunshine in your phone if its outside! :)
2) Connectivity - Android has all the possible connectivity! Obviously it has Bluetooth, but its not so obvious to have Bluetooth for iOS. apart from it, Google account is integrated so you got your GMAILS, GTALK, SKYPE, Yahoo, Wassap, and possibly every messenger. Also you got Opera Mini browser, so your net browsing experience is uncompromising! Also unlike Iphone, android has the universal USB, iOS on the other hand needs peripherals for everything!
No 1 reason) Hardware options ( So many cellphones! ) - This reason is solely enough to state android is better than iOS. Not everybody can afford a smartphone, but everybody deserves a smartphone! Thats what android believes in! thats why android has a wide range of phones, from entry level to Executive! Also, android has phones from variety of companies like Samsung, LG, SONY, HTC, Motorola, etc.. Hence its the user making the END choice for himself. Which company phone he wants, what screen size, if he doesnt want a virtual keyboard he can opt for a qwerty or slide on keyboard as well, or if he wants a multi media android phone with high end camera, or he wants a regular size but still an android, he will have all his demands met, because unlike iPhone, the USER has every increasing choices!
Thus Android, if not better than iOS in terms of OS, but is definitely better in terms of satisfying the user ( which I believe determines which OS is better. Thus Andoird > iOS )