Back when I lived in Marpole, I would take the 100 all the time from Marpole Loop, since we used it to get to a lot of places inside Vancouver, since it was certainly easier to take the 100 to access the SkyTrain at 22nd St, rather than taking the 10 or 98, both of which went through Downtown. Note that this is from before the Canada Line opened in 2009. Even then, a straight line path is faster.