The difference in security approaches is manifest by simply considering one simple "feature" of each product:
- Samsung Galaxy S4 (released 21 days ago) already has root methods allowing the installation of custom ROMs, in fact, some root methods were released within days of the product release
- Apple iPhone 5 required nearly six months to jailbreak
Anyone who thinks Google or Samsung take security seriously is seriously delusional.
That's because because Samsung allows it as do other Android phone manufactures, they even go as far as posting a how to guide in their user forums and provide flashing utilities. Rooting a phone is meant for developers, you can't root a phone maliciously unless the user consciously makes the decision to do so. Actually because of rooting Dev's can make their phones more secure by patching any security holes quicker then a manufacture does. I absolutely love having a phone that I can root and customize to my hearts content but I'm a programmer and I know what I'm doing. I built a custom ROM for my phone that resembles more of a Linux OS as I have installed a NAS server, LAMP, every scripting language that I could think of, even Xwindows. I agree a normal user is probably better off with a Windows 8 phone or an iPhone.