Here's the answer:
“저것이 사실 좀 더 커요”
Watch a real native speaker say it:
Here's how it sounds in a textbook:
Fun fact: the hundreds of thousands of people learning Korean with Memrise get this phrase correct 94.76% of the time!
Fun fact: the hundreds of thousands of people learning Korean with Memrise get this phrase correct 94.76% of the time!