I doubt you'd be able to get those numbers.

It certainly would not make sense mixing data for cheap and expensive bicycles (since these might have very different rates of failure).

Anyway, Taiwan has been the source for high-quality bicycles for years.

Cannondale has a very good reputation but their frames certainly break too (once in a while). I think the major concern with Cannondale moving overseas is that it's a change (and people are scared of changes) and being made in Taiwan makes them less of a "classic" American bicycle company and less "distinctive" (now, they are just like everybody else).