If you want to dive deeper into that game, the high-danger shot attempts at 5v5 were 8-5 in favor of the Rangers. This is probably the stat you're trying to describe and is labeled as HDCF (high-danger corsi for) on naturalstattrick.com
There is another metric called xGF (expected goals for) which factors in the probability for each shot attempt to result in a goal. These probabilities are determined based on data from previous goals scored over the last decade. The current data is limited, but still very useful, because it's based on shot type and location and doesn't factor in pre-puck movement and manual puck tracking like Valliquette's analysis. However, those types of models will eventually be built and become public once the NHL starts to collect and release tracking data.
If you have questions about it, just ask rather than writing it all off because you don't understand it. It's still a rapidly evolving field and even the people heavily invested in analytics are learning more about it every day. We all understand that it's a tool that still cannot fully encompass everything that goes on in the thing, but it still provides plenty of insight.
