You said it yourself: Investor presentation. It is filled with BS, as you would expect. They are coming up in 8 and 16 bits, because above them others stopped making it or switched to M0 or merged with other companies. They put "AMD Fusion, Athlon, Sempron, Turion, Opteron, Geode", TI OMAP and Arduino and the Tegra as under 100 Mhz. Atmel AT91xx is twice on that table.
I'm sure if they would show a graph about the increasing number of cat videos rendered on 16 bit MCUs the investors would be happy.
*isnt geode and OMAP and bunch of other platform NRND anyway? Sure this survey must have been filled by "experts".