For sure, the type of plastic makes a huge difference. I mean, @charlescarter is right about softer plastics soaking up the solution, because I had a cheap comb dissolve on me once. It's worth spending a bit more on combs that can handle the barbicide mix.
Ever put a cheap comb in barbicide and seen it warp? I had some combs turn cloudy and brittle, but my good acetate ones stayed fine. The softer plastics seem to soak up the solution and get messed up faster. So yeah, the type definitely matters from what I've seen.