Chineese budget ZLC blades (stuor vs huieson)

[qylw]

I have Stur ZLC blade that I like to play, so I decided to make a backup by buying Huieson ZLC, as I thought it will be identical.
I just got the Huieson, so I decided to sand the wings for penhold. To my surprise I noticed quite significant construction differences.
Posting close-ups below. (I haven't play with Huieson, so I cannot tell what's the difference!)

Stuor:

Huieson:

 

[qylw]

Both black ZLC materials are very hard to sand, so ended up using dremel.