IOS vs Android

According to the bar chart, it demonstrates and compare between two worldwide OS which are IOS and Android.
Firstly, you may see the user base of both OS are the same but i believe that IOS has more user base in western countries and Android has more users base in Asia like Samsung. For development cost, Android seems to be more invest in technology because Android is open system so they are developing all the time.
  Actually, IOS is great OS but a new CEO makes it not so interesting anymore. When Steve Job was alive, IOS market share and technology used to increase a lot.
Secondly, For App i as a consumer prefer IOS because it has many application and useful tool. Compare to Android has less application than IOS and useless. Moreover, it seems that Steve job did a lot of investment for development and research as well. When Iphone releases many people want to buy it, more demand for IOS. However, today apple market share decreases a lot.
Thirdly,  Android has failed in many areas according to bar chart because the performance still has some problem like when i was using Android goods , it was very slow to react.
Lastly, for overall IOS is better than Android. As a consumer, i agree with this bar chart and IOS never give me a bad feeling in technology.It is the greatest one.