Point of Detail... The Long March 5 isn't a 'current' launcher. It's not due to enter service until 2014. To get Tiangong-2 up (20,000Kg) in 2013 they're apparantly going to use a LM2F with extra strap-ons to get it up there.
This 100-tonne payload rocket is just a paper exercise at this point, much as SpaceX's successor to the yet-to-fly Falcon Heavy is.
All that said, China putting stuff up into LEO and sending probes BEO and eyeing the moon and Mars is great from my point of view. As Neil DeGrasse Tyson said, once it became clear the Soviet Union wasn't going to the moon, the US stopped going. International co-operation on space and hi-tech has been largely shown to be a very slow, expensive way of getting things done. Yes, if everyone committed to the goal and worked without reservations then we'd get a lot done and very fast but it's a fantasy.
So the best way to get funding out of the West is for us to fear, in our pasty little hearts, that THEY (it's always them) will get there first and... do things... before we get to do things!
Let China get their own multi-module space-station up by the end of this decade (the successor to the current Tiangong program) and develop a family of rockets that can compete with the West and we'll see a lot of water squeezed out of the current Western system and we'll get things done.
In the end, it's all about dick-measuring but if it gets us out there...
And who knows? Maybe they'll get a 100-tonne payload up there by 2020.