The thing that stood out the most for me was slide-up to unlock, that's been a Windows thing since they began their redesign with WP (from WinMobile).
Still I think that somehow Apple did a better job with the flat UI, I'm currently using Windows 8 (by choice) and my phone is a Lumia 521 (again by choice), and I always feel that something is off with the WP/W8 buttons, they just seem too flat or too... just off -- I can't explain it but I get this weird feeling everytime I see them, the buttons and controls just don't feel polished enough.
When I first installed W8 on my laptop, I thought it might be because it's a beta product and not finished, then when they shipped those icons, I thought it was just my screen (my laptop is a four year old dell inspiron that shipped with vista, incidentally it runs W8 better than it did W7, and better than vista before that), but now that I have a new smartphone the niggling is justified -- there is something odd about the buttons, especially when compared to the new iOS7.