I think 90% piracy is over the top and nothing but an attention-grabber.
There's two sides to it.
1. Number of games being pirated.
2. How many can and will use pirated games.
And here's what I think.
1).
There's so much shit being released that I find it hard to believe that 90% of all sofrtware is being pirated, although I do believe that most quality software do get pirated...but not 90%
2).
Not everyone has a jailbroken phone, as many people are afraid of doing it, or simply has no interrest in it. I think this is true among "normal" casual gamers.
Hardcore gamers? - that's something else. I do believe they pirate like there was no tomorrow, but they're just a small segment of the combined userbase.
That's what I think anyway.