It doesn't HAVE to be an exact match title tag in order to generate favorable rankings. Semantic search has come a long way in interpreting the meaning of content, rather than the exact keywords you feed it.
In the past, Google only knew about a page what you told it. This is no longer the case, in that it can read in between the lines and understand the intent of a search, and match it up with content that will sufficiently answer that intent.
However, the system isn't perfect, and as you can see in this article, there is a slight correlation between exact match keyword usage in title tags and position. I also wrote an article that confirms the importance and continued relevance of on-page optimization.
If I can get an edge, I'll take it. I still use exact match (unless it feels forced or otherwise compromises the integrity of the content).