People have been successfully sued for less than this, many times before...
http://www.rollingstone.com/music/news/sam-smith--tom-petty-...
http://en.wikipedia.org/wiki/Musical_plagiarism#Cases
But that's a very simple chord progression with common vocal hits, whereas this case seems to hinge on a very distinctive bass line and percussive style.
Would still have been pretty ridiculous if a verdict had been made that this counted as copyright infringement. (They settled it amicably)
But that's a very simple chord progression with common vocal hits, whereas this case seems to hinge on a very distinctive bass line and percussive style.