Time chose Angela Merkel. The award allegedly identifies the person who has the most effect on the year's news, not necessarily the most benevolent one, so being the destroyer of Germania does not mandate disqualification.
There were seven other finalists, including Islamic State leader Abu Bakr Al-Baghdadi, Black Lives Matter activists, Donald Trump, Caitlyn Jenner, Uber CEO Travis Kalanick, Russian President Vladimir Putin and Iranian President Hassan Rouhani. Bernie Sanders won the online readers' poll (which tells more about the readership of Time than it does about the salience of Sanders).
The following bar graph compares relative search interest for Merkel and the other eight listed above from January 1, 2015 through December 10, 2015. The higher the number, the greater the number of searches for the person or group worldwide. Google Trends generates the figures. It's not clear to me exactly what these numbers represent beyond relative search volumes:
Trump trumps the field, although he isn't dominating the global stage quite as convincingly as he is dominating the Republican presidential field. Among GOP candidates, he easily beats all of them combined. Garnering a 12 here, he falls just short of overcoming the combined search interest generated by the other eight people in contention, who together earn a 13.
Google Trends search variables: Donald Trump, Caitlyn Jenner, Vladimir Putin, Hassan Rouhani, Bernie Sanders, Angela Merkel, Al-Baghdadi, Black Lives Matter, Travis Kalanick.