If you say "by functionality" and mean that it's a touch screen phone, then how can that be avoided? Remember, iOS was around before Windows phone AND Android. Have you actually held a device running iOS 7 in your hands, and used it for an extensive period of time? I'm almost certain you're another one of the moaning masses, complaining about mere screenshots...
When taking your "evidence" into account, you should consider this video:
http://www.youtube.com/watch?v=VpZmIiIXuZ0
Next, please.
I have had a hands on-experience with iOS 7 for a few days on my daily device and while the OS didn't show many bugs which was impressive, the design was absolutely terrible. It certainly changed my phone into a completely new phone but for the worse. I felt like my premium iPhone had been downgraded to a cheap android phone. The features of iOS 7 were great but the child-like cartoon design that lacked contrast or differentiation was unbearable. It made navigating the settings app difficult since every icon was the same color and there were no dividing lines to show where one setting started and next began. Calendar is nothing like it was before. Calendar runs altogether with no differentiation and is now more difficult to use than before. Mail looks terrible and many of the gestures we have known since iOS was introduced are now gone. The duration of the new animations take forever thus making the whole OS feel slow. The duration of the animations is something that can be sped up so this I will not harp on too much. In the messages map when you scroll through a conversation each chat bubble bounces around independently of each other in a very cartoon manner that is just irritating. Editing the conversation like to delete a chat bubble or a picture now requires more steps and is very frustrating. It is no longer the simple tap edit, check mark the chat bubble, hit delete. You have to hold you finger on the chat bubble until the little menu cloud pops up, tap "more", check mark the bubble, then hit the trash can icon at the bottom of the window. They made it seem like camera roll was improved but I beg to differ. The ideas were great, implementation however, not so much. This new layout to the camera roll felt cluttered and unorganized.
The entire OS has changed. Nothing feels familiar. Nothing feels premium. It feels cheap and plain. This is not Apple at their best. This is Apple trying to conform and that was what Steve changed about Apple once he was back in charge. I do not plan to update to iOS 7 and will be recommending that every not update either. #BoycottiOS7