The info you questioned is readily available online at http://www.xmwxweather.com/aviation/.

snip
Quote:
... From runway and takeoff to final approach and landing, having XM WX Satellite Weather onboard boosts pilots’ situational awareness through interactive graphical weather updates on compatible displays. Available instantly and continuously broadcast, the XM WX data stream includes these data products, and many more:

* High-Resolution NEXRAD Radar
* Lightning
* Satellite Imagery
* METARs
* Winds Aloft
* Freezing Level

Featuring a total of 19 data products for aviation, XM WX Satellite Weather provides a comprehensive data suite for a more complete picture of the weather, at any altitude. ...
unsnip

As for whether it includes weather in its "ground speed/fuel consumption/range calculations", I doubt it. Some things like fuel consumption are aircraft specific so I would not expect a portable unit to do that. Some things are easily computed though if you have the input. This nifty gadget can get you those numbers without having to use fuel to find out for yourself.
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Better is the Enemy of Good Enough.
Okay, what’s your point??