Mack vs Jones

In an 16 team standard IDP keeper where we can keep 2 defensive players ... I am currently keeping a top 8 LB and for my second keeper I need to decide between Khalil Mack at DL or Reshad Jones at DB.  From your earlier comments I assume Jones but wanted to see if maybe that was only if Mack is considered LB?  Thoughts?

if mack is only an LB, I like jones, he Mack has DL still, Mack-attack all day