Originally Posted by Ironfish653

I would say both, particularly if you're talking about high performance "racing" stuff.
"You can have Strong, Light, or Cheap; Pick two" as the saying goes, but there's a point where minimizing weight will compromise absolute strength, regardless of cost.

Based on anecdotal evidence from here, and the cycling community at large; I'd say that entry level to mid range bikes tend to have lower quality wheels, and less optimized frames (overbuilt) so you see more wheel failures.

A higher end, high performance bike generally gets stronger, stiffer wheels, but that usually goes together with a lighter, more weight -optimized frame with less "reserve capacity" than a more budget bike. Couple that with the more strenuous use that the rider of such a bike is more likely to engage in and you're more likely to encounter frame damage, ironically, than an inexpensive bike (though pretty rare)