1) Different radius 2) Different length of day 3) Different inclination angle of axis 4) Different length of year 5) Different moon[s] 6) Earth is in the *sky* - not under your wheels. 7) different oblateness 8) etc.
I think much of the surface of Mars has been photographed in decent enough detail - but I don't know about how well the topography is known.
Jon
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