It is tough to land on Mars. The Moon really isn’t much of a problem, but the problem with Mars is that commands take longer to reach the vehicle for one thing and of course just trying to land on a planet with an atmosphere is also difficult. Granted...Mars’ atmosphere is thin, but it is still there. Heat shields are required if I remember.
And so far, NASA is the only entity that has successfully landed rovers on Mars.
“Schiaparelli’s primary role was to test European landing technologies. Recording the data during the descent was part of that, and it is important we can learn what happened, in order to prepare for the future.”
It would appear that "European landing technologies" involve interface with the planet's surface at somewhat higher speeds than NASA prefers.
And so far, NASA is the only entity that has successfully landed rovers on Mars.
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Yes, including innovative ways. Remember the bouncing ball method?