OK just for starters, they say the poll was conducted at the end of Obama’s term and beginning of Trump’s. That is sort of a non-existent point in time, but even if the poll was taken in Obama’s last few weeks and Trump’s first few, no one would have a record of Trump leadership as president on which to base a response.
Not to mention the vagaries of polling in many different countries/ cultures, by an outfit that can’t poll honestly in the USA.
Bingo.