Senior Housing is presently one of the fastest growing real estate sectors and has attracted quite a bit of investor capital. Almost all of that capital has poured into Welltower (NYSE:WELL) as it is the most direct beneficiary of senior housing same-store NOI growth. At this point, Welltower has become substantially overvalued, and there is not enough gap in quality to justify the extreme premium at which it trades over senior housing peers. The underlying growth rate of National Health Investors (NYSE:NHI ...