I have a feeling that come election day Clinton regardless of opponent will be get 70%+
HAHAHAHA...no
Gillibrand's 2012 and Schumer's 2004 numbers north of 70% were a result of little-known opponents and incumbents that were extremely popular. After a national campaign, Hillary would MAYBE hit 65%, but I doubt she would cross 70% even if she were running against Cruz.
Ted Cruz would be such a bad match for New York that he could lose New York 75-25 while losing the Boroughs altogether by 85-15. Christian fundamentalist in New York State? He would have trouble in any state with a large Catholic population.
Matchups that I have seen involving Ted Cruz against Hillary Clinton suggest an LBJ-scale blowout.