I feel like I kind of agree with this but at the same time i'm not sure. It's good for them to hit 50%, but at the same time they haven't really done anything extraordinary to get to it, it's more like all the other competition just fucked up more than they did. 

With ioi updating the hardware sales to mid-May in one sweep we now can see PS4 holding the majority of the market. One console hasn't dominated like that since PS2, I believe. Wii managed to hit ~49.5% at most iirc.

That would be like putting car sales with truck sales imo. Yeah they both do the same thing but have different uses and features.

yes and if you say marketshare in general and include just cars, i'd still call it a pseudo marketshare because it actually should include both. If you flatout say "Marketshare of cars" then trucks would be included. However somepeople will buy either a car, or a truck depending on if it gets the job done or not which would put them both in the same market.

ok, about 65%, but not 100% of the handhelds.

The main point here those is some people only have a handheld as they only buy one console (I have a friend like this who buy which ever console appeals most regardless if it is handheld or home console). So Sony, Nintendo (assuming that some people also just have a Vita) and Microsoft is still competing against them when it comes to consoles so really, overall, it is a pseudo marketshare when you only take one group into consideration.