Significant consumer-facing iOS 7 Changes:

    UI
    Inter-app audio
    Background fetch
    P2P (arguably, this isn't a new feature, it's essentially a wrapper to dns_sd)
    Airdrop

Significant KitKat changes:

    *Actual* SMS/MMS API
    Storage access framework
    Printing framework

Plus, Inter-app audio and Airdrop are essentially wrappers to P2P (which is also a wrapper to dns_sd), so the only real added feature was background fetch.

You could say the same about KitKat (except for SMS), so really it boils down to this:

iOS 7:

    UI
    Background fetch

KitKat:

    SMS/MSS API

Which Android still wins, IMO.

Plus, Android already has way more features than iOS already, not to mention the ability to install unsigned software, NFC, custom lockscreens/launchers and who knows what else.