With regards to more "in-depth" reviews that may reveal a strehl ratio or some other value, you're still only seeing a result of a sample of one. That's only one data point and may not be generalized to an entire series.
I found Ed Ting's review on this scope to be highly practical to a potential buyer/user and therefore more helpful than a quantitative assessment of a widefield scope...
My point has been missed - entirely - by some readers.
What you describe above is a product demonstration. And, they are - by definition - quite practical and extremely useful in that it shows what to expect by demonstrating the product in real world usage. Technical details are not really part of these product demonstrations. However they are quite complimentary to a more in-depth review that delves into the physical attributes, design and some optical tests.
In-other-words a product demo is not a review, but can (should?) be a component of one.
I would not make a purchase decision based on this demo. I would need to see more.
If anyone is curious about what equipment reviews should really be like, check out the Japanese publication Temmon Guide. Many of the product reviews found in this magazine are deep and take no prisoners. Which is really the way it ought to be.
Edited by peleuba, 29 August 2020 - 03:19 PM.