This is actually a very common issue on this forum. Mislabels are such a common problem. I’ve seen more than my share of mislabels, but have been able to identify them, as far as I can tell, by the sheer volume of trees ordered. Still lots of folks on the forum purchase one tree and naturally feel they have an authentic tree with which they can evaluate the cultivar.
In many cases, if the tree doesn’t match historical consensus, there may be good reason to question the traits of the tree, until some definitive identifying conclusive traits can be established.
One peach tree I’ve not been able to conclusively establish is Spring Snow because it was shipped originally as a mislabel and others have had variable results with the fruit. However, another fellow member of the forum and I exchanged scionwood to test this cultivar. We should be able to offer a more comprehensive and confident analysis next year.