OK, now I know, why do you think that pins are better.
Because R-type has preformed better than Lumpy channel WB.
But there are diferences that are preventing to pompare WB and make conclusions out of it:
1. R-type WB has higher pins (6mm) than Lumpy (4,5mm)
2. Lumpy channel has too thick base (1.5mm)
3. Lumpy channel was more restrictive
So my conclusion is that if you compared Lumpy channel and R-Type WB with the same characteristict, Lumpy channel would bo better. And that base thickness of about 2mm would bring the best results.
And please don't think of me as a newbie who wants to be smart here... if you do...