Blacks A Fake does race in a Telstar now.
When I was in the states, they wouldn't really put the heavy (eg Harmer) bikes on 2yos. They never put one on a horse that hit its knee and a number of people wouldn't use a heavy bike on a horse with rear end or back problems as the lift exasberates (sp?) it. I saying that, it was in general agreeance that a heavy lift bike was faster than a Telstar.
In a perfect world, I guess you would have both. But not everyone has unlimited funds, and a Telstar would suit a wider range of horses....