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I'm writing my master's thesis and began to wonder if it is ok to comment on some of the publications i cite in my 'State of the art' part.

I have several papers where the results and/or methods are.. let's say obfuscated, which is, sadly, not uncommon, since lot of them are published by vendors who want to show their capabilities and know-how, without actually revealing anything.

So I don't want to just write down what they found out, and how (which is more important for me) but also comment on how correct and sound this seems.

Clarification:
The papers are all written by the engineering / research departments of various manufacturers and are published in scientific or engineering journals.
Some of the 'errors', maybe error is a much to strong word here, are surely due to out-dated methods or models or such. But some are just plain missleading, most certainly as a way to not give away to much of information.
For most of this i don't have hard facts that they are entirly wrong, but derivng from my research, and mostly the problems I stumbled upon, i'm pretty sure that some things don't add up.

I'm writing my master's thesis and began to wonder if it is acceptable to comment on some of the publications I cite in my 'State of the art' part.

I have several papers where the results and/or methods are obfuscated. This is sadly not uncommon given the source of the author(s) are industry vendors who want to show their capabilities and domain expertise without actually revealing anything competitively substantial. The papers are all written by the engineering / research departments of various manufacturers and are published in scientific or engineering journals.

Some of the 'errors' in their publications are surely due to out-dated methods and/or models. However some others are just plain misleading, most certainly as a way to obscure competitive information. I don't have hard facts that they are entirely erroneous due to the omission of their data, but deriving from my research I am pretty confident that some of their results don't add up.

So I don't want to just write down what they found out and how, but also comment on how correct/incorrect their results seem based on my research.

How should I best comment on these opaque industry publications?