Hello,
The legendary items appear very rarely in the market, in itself I think it is a good thing, they wouldn't be legendary if they were commonly available.
BUT, so many times it happens that their specs are lower than my current equipment (from the Champions), even though my current equipment has a lower level.
I am aware that two items from the same level can have different specs, and I like this idea, reminds me of Pokemon.
I don't know if it is a choice of the devs or not, but I think it is a pity because they become useless, like all the other equipment in the market.
Let me know if it happens to you too, and if you think something should be done.