This is not true. In fact if you actually go back and read the articles on it, one of the strengths was how responsive it was on hardware that was much weaker then what android needed. It has its problems but you are literally taking it's strength and pretending it was a flaw 0_o

I had one. I know first hand.

Owned most Lumia models, Android were even slower.

Starting with Window Phone 8 everything was native code, even .NET, while on Android the first Dalvik versions didn't even had a JIT.