As a matter of course, the Raptors do not make things easy. They've never in their history been in firm control of a playoff series. You can look through the record books but you'll never find a line anywhere that says "Raptors up 3-1" or "Raptors dominate, take early 2-0 lead." It just hasn't happened.
They've won Game 5s though. When they were done 3-1 to the Nets in 2007, they staved off elimination at home. When they needed to take control of the Brooklyn series in 2014, they did it (for a time).