Also remember to factor in things like support and availability into a value consideration:
- If I contact the company with an issue, can I expect a reply that I can readily understand, in a timely fashion, and that actually is likely to help resolve the issue? (I've dealt with some amazing products from a German firm, who mainly target companies in Germany, but their Canadian(English) support services were not nearly up to par with their price.)
- If I need a replacement or extras, am I able to get new ones that day, sometime in the same week, or am I waiting a month or more?
I can't personally say one way or the other as to the value of the products in question, but there are far more things to consider when buying something than what design and factory something comes out of. Even when coming out of the same factory with the same production lines used, it is not uncommon for multi-branded designs to use variant parts, or different QA standards.
A friend's company ordered some custom branded toys in bulk recently, and it was kind of cool to sit down with them and go through the configuration options. Besides the 'branding plate', a custom modified version of the top shell of the toy, they could also select a few different internal boards, and those had various options on what chips/capacitors/etc the boards were populated with. You could shave fractions of a penny off each toy by choosing the lower grade capacitors for example. And beyond that they could choose a quality assurance testing standard that ranged from multiple inspection points on each and every unit rolling off the line, through random spot checks, all the way down to basically "If you spot something weird looking on the line, just toss it in the bin, but otherwise assume they're all fine". They even had an option where they would reuse any 'functional rejects' out of a higher status QA pass from another customer.
But personally I find a lot of the top tier flash gear these days to not really be worth the expense compared to the mid grade items. I rather have more units on hand for the same price point rather than assuming the higher cost units are going to 'always work' - Swapping a flash out to replace a malfunction is a more sensible work flow in my mind than stopping a shoot entirely/changing the lighting design while waiting for service/replacement to arrive. - If the unit's specs and abilities meet my needs, and user reviews are reasonably good, then I'll be as happy with more lights on hand.
Canon EOS 7D | EF 28 f/1.8 | EF 85 f/1.8 | EF 70-200 f/4L | EF-S 17-55 | Sigma 150-500