ARW with Banastre Tarleton analogue in the North

WI during the ARW there'd been some overzealous psycho similar to Banastre Tarleton in charge of British & Tory irregular forces in the northern colonies ? How much worse would the British position have been say after they'd secured NY by 1777/78, had such brutal tactics (as used by Gen Cornwallis in THE PATRIOT to describe Col. Tavington's actions) driven previously uncommitted locals in the Middle Colonies into the Patriots' arms ?
 
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