I don’t think Mitt’s record informs for many of the issues here. It is beyond question in my mind that Mitt would be far better on nation defense, the economy, the border, Supreme Court, spending etc. Sadly there is no way to know with certainty. My conjecture is as viable as yours.
I suppose there is "no way to know" if one refuses to Look.
You are ignoring the clear parallels and direct linkages to those areas of policy in Mitts established record. The only question is, why? Are you too prideful to admit you compromised your conservative values by supporting the greasy liberal in the last election?