I like that Microsoft and Apple are still both using the whole Android fragmentation argument. However it doesn't really hold much weight anymore since Google pulled the guts out of the OS and put them in the Play Services and individual apps that they can update regardless of which Version you...
From what I understand Google said that the first gen Nexus 7 would get Lollipop. I'm not totally surprised the specs should allow it to run without too much issue. Technically all the Nexus phones are capable of running lollipop.
If I was to buy a windows phone it would be a Nokia. I had a Lumia 800 for a little while and thought it was fantastic. The biggest problem with Windows phone is the lack of apps and the apps that are available aren't that great.
I think android is targeted more not only due to it being able to install apps without needing the play store but also because it has a much larger user base. Its like why Windows has so many Viruses and Malware while OSX and Linux have very few viruses/malware. Most people/businesses use Windows.
Don't hold your breath. Google and Verizon don't get along to well due to Verizon withholding updates to hype sales of new devices. This "should" change once Verizon drops its CDMA network and releases LTE only phones.
Hopefully it will help break up this duopoly that the market seems to be stuck in. I personally never cared for BB devices because everyone I knew that had one always had problems with them. I would like to see them make a comeback though and shake up the market a bit.
It seems that the nexus scores are low due to thermal issues. Anandteck re-ran the GLbenchmark test after putting the Nexus 4 in a freezer the scores showed major improvements across the board.
Link: New Nexus 4 Benchmarks from Anandtech show huge improvement! - xda-developers