Did Leonardo Deserve the Title Genius?

People describe Leonardo as a true genius calling him "Truly marvelous and celestial was Leonardo, the son of Ser Piero da Vinci" (http://www.fordham.edu/halsall/source/vasari1.html) , and something never heard of before, but the question is: Did he really deserve this title? Leonardo is known as one of the most famous artist of all times with artwork such as the Mona Lisa, and many other similar to it. Leonardo also was known for one of the first people to work with the dead body of a person, and figure out how it worked, and what was on the inside. Leonardo solved many problems that people had with ease, and did not have any problems himself. Leonardo solved many problems like how to get over a mountain. He had the idea that you should dig a hole through the mountain so a person can go through it with ease. Leonardo practiced art even at a young youth. When he was very young, he started working with marble, and also clay heads of women smiling. Though Leonardo did not finish many of his works, they were still truly amazing. That is the reason why Leonardo should be given the title as a genius, because he did some amazing things, and solve some extremely difficult problems that no one else could solve at that time.

Vasari, Giorgio. "LIFE OF LEONARDO DA VINCI: Painter and Sculptor of Florence." Internet Medieval Sourcebook. Web. 13 May 2010. http://ht.ly/1Kaia.
Picture:

http://commons.wikimedia.org/wiki/File:Possible_Self-Portrait_of_Leonardo_da_Vinci.jpg