Fresh Board purity - affected by sawbuck ?? [Actually no]

Wondering why is there a discrepancy between the purity of the branch taken from a tree and the fresh boards cut from that tree when felled...

Is the impure sawbuck affecting it?
UPDATE: I am a stupid ass and made a stupid mistake please see post below for clarification...

Is the impure sawbuck affecting it?

UPDATE: I am a stupid ass and made a stupid mistake please see post below for clarification...