Frozen semen breedings

I am looking for alittle info about breedings done with frozen semen. Cause I have been hearing that these breedings are not as good as natural breedings. Now when I say not as good, I mean that these breedings are not producing the same quality bulldogs that were produce when they were doing natural breeding with the sire. Is there any truth to this? I think that it is more so that they have really high expectations BECAUSE its a frozen semen breeding to GrCH so and so that when they dont get what they want they blame it on the semen.

More difficult due to the need for surgery yes, but "lesser " quality dogs? I see no reason.

i doubt it, it not like your cloning it....just reproducing, that spern is the same sperm no matter how old it is