Is the stroke rehab research emperor running around naked?

Is the emperor wearing any clothes? I loved this parable. From all the research I have been reading I really can't tell if any of it is valid.
My concerns are;
1. There is no standardized definition of stroke damage. If you can't even define your starting point there is no way that research can be replicated.
2. No one seems to be separating the spontaneous recovery from the recovery due to therapy.
3. There aren't enough projects using scans to prove changes.
Maybe I am too stupid to comment on stroke research since million dollar words are used to keep us peons in the dark.