Personally, I would lose instant respect for that level if it were to be based on the carded numbers. It's too easy to fake those.
For that reason I lost respect for pretty much all tiers after the introduction of red tees being included in averages,
When I made legend, it was an achievement of sorts - without red tees and the equipment was inferior to current clubs.
Maybe tiers are an incentive for some, so they grind away to get to the next tier (thus ball sales for WGT)....for me, just a meaningless title these days.