$80 STEELDIVE 1970 Vs $250 Seiko "5KX" (and $1,500 Captain Willard?)

Recently picked up one of these Aliexpress specials.  The STEELDIVE 1970 or SD1970 is a Chinese clone of a Seiko Captain Willard.  While I don't have a $1,500+ Captain Willard to compare it to I do have a Seiko 5 Sports SRPD AKA 5KX.  Sapphire, 200M WR, Solid end links and full lume bezel for $80?  Fact is specs wise this cheap clone is closer to the $1,500 Captain Willard than it is the $250 5KX!   It's not even a close competition!