Physical tie ratios being down one point vs last gen is explained by digital trends.
Of course that has an influence. I'd also argue that fewer disc based games coming out limits the packaged tie ratio. If a customer had 70 Action games to choose from in 2009, and now that customer has 23, well, the likelihood of something appealing to that customer is lessened, wouldn't you think?
Tie ratios including digital could be even higher this time, but there's no way to know.
I think, including Digital, especially with PS+ and GWG, total tie ratios can easily be seen as being much higher now than in prior gen.
This doesn't change the fact that fewer disc based games are being released now than in prior years, which is all the graph you were pointing to is saying.
My other statement was more in regards to the sales of individual title performance. Sales of Tomb Raider in the UK, for example, can not be explained as being "okay" based on digital trends alone.
In any case, I hope this doesn't qualify as any kind of list war thing. Just trying to be illustrative of the release count problem.
87 Action games released between Jan-Sept 2009, for example. Over the same period in 2015, 26 Action games released, however, 7 of those 26 were GOTY or Remasters. So, really, less than 20 Action games were released in the first 9 months of 2015 that could be considered "new".