Agree on that. When Southbank contributed 6 runs on route 109 they often used A or B class, which often caught up with the Citadis in front. It just shows how suitable they are for the Melbourne infrastructure.
The Southbank starter often allocated B class for drivers willing to do overtime, and C or D class for drivers insisting clocking off on time, which shows the drivers' preference on Comeng trams.
It's not the first time passengers, tram enthusiasts or general, expressed their preference on Comeng trams.
It's safe to infer that tracks, drivers and passengers both prefer Comeng trams. As discussed many times, Katty Bull's lawsuit ruined the system.