Common Blackbird: if 9B is more accurate, why would that not be in there? Seems strange does it not, despite your high standing, this figure is known to you but not being conveyed to the target audience...?
Common Blackbird, please don't shoot the messenger!
Formally, the presentation speaks about a "$5+ billion market". Please note the '+'! $9 billion is well in the $5+ billion range. No reason to be picky.
(Reminds me that the $70+ club also has a '+' in its name …)