Boker Plus Kwaiken Air runs a 3.54″ straight back blade in VG-10; Real Steel Bruns runs 3.54″ of drop point in VG-10. The Real Steel Bruns is the lighter of the two by 0.23 oz.
01234567 in
Boker Plus Kwaiken Air · Straight Back
3.54″ blade · 2.93 oz · ~0.83″ tall (derived)
Real Steel Bruns · Drop Point
3.54″ blade · 2.7 oz · ~0.86″ tall (derived)
Length and spine thickness drawn to true scale from published specs. Profile is the shape family's outline, not a scan of this model.