QUOTE (TheAnt @ Jan 21 2015, 04:21 PM)
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most landers stand on a platform with legs.
Not really. Of the 8 'successful' landers (I include Beagle 2) - 4 landed on airbags, three with legs, one on its wheels.
For MER and MPF, by virtue of their airbags, they ended up rolling roughly to a stop in a flat enough place for initial deployments. I would expect B2 to have done something similar, but realistically, who knows.