<li>The fps are linked to the cropping factor. You can get 8.4 fps with APS-C and only 3.1 fps with full frame.</li>Yeah, this doesn't make much sense. If FF is 3.1 fps and APS-C is 8.4 fps, why is the max burst rate 10.1 fps?
<li>Burst mode will give you a max of 10.1 fps depending on the image size and buffer.</li>
Is it saying APS-H would be 10.1 fps? Why would they need to bring it back down to 8.4 for APS-C?
That is an obviously wrong conclusion to draw - either, as you say, somebody really goofed, or there's another, more plausible explanation: sRAW or some other mode will offer that speed. I don't think it's incompatible.
I'm also not seeing where "the math is wrong" on the various resolutions and sensor sizes - it's quite possible that the numbers are just fudged and the real target is the resolution size, not the resulting angle of view from the crop. I would agree that it would be a big mistake to link APS-C and APS-H "crops" to a bogus sensor size, but we don't actually know the size of the sensor - it may be slightly bigger or smaller than previous "full frame" sensors, especially if it's a Sony make...though please keep in mind I'm just speaking from my own rumors and haven't run any numbers / dug up any specs to say this, so I could be very wrong too!