If you've seen how the TTC operates streetcars along Spadina, St.Clair or the Waterfront, you'll know that they're incapable at moving people along with any kind of efficiency whatsoever.
Unfortunately I cant put up a video here of how slow streetcars can move through these ROWs, because I have the perfect illustration of how pathetic service has gotten along these stretches.
I often tell people that if you want to be late anywhere you go, go take a streetcar and it will make it happen for you. Personally they only way I ever rely on the streetcar is if i'm not in a rush to get anywhere, asides from that i'll actively go out of my way to avoid it or reduce the length I have to travel on one.