What does that have to do with the OFFENSE?

In fact, like for Seahawks and the Giants, shows that the $$ was spent on the defense with the talent on offense (particularly the O-line) being neglected or mismanaged.

How are the offenses for Seattle and New York looking despite both having SB winning QBs?

Then there are teams which spend the bulk of their cap $$ on offense and not the defense (Cowboys, Raiders, Steelers, etc.).

Siemian would be putting up even bigger nos. if he were playing behind those O-lines and had those weapons at his disposal.