It would be less useful, but it wouldn't be useless. Given the variety of landscapes and cityscapes that each system goes through, it's highly unlikely that SRT is so unique that it would be absolutely uncomparable to any other systems. If it really is just one or two stretches that are problematic, then it is likely a design/operation problem with the SRT, not an inherent problem with ART technology. Which is why we need more data in this discussion from both Toronto and around the world (which might be readily available and could very well show that ART sucks in general), but not simple assertions that ART sucks because the way it's implemented in Toronto sucks.