Okay well then it won't matter because I can guarantee you that US electricity won't have absndoned fossil fuels in every part of the US by then.
But if your electricity comes from a big old oil-burning plant (or most coal plants), an efficient gas system will objectively be better in terms of GHG emissions, as they run those suckers 24/7 even when demand is low.
deleted by creator
Okay well then it won't matter because I can guarantee you that US electricity won't have absndoned fossil fuels in every part of the US by then.
But if your electricity comes from a big old oil-burning plant (or most coal plants), an efficient gas system will objectively be better in terms of GHG emissions, as they run those suckers 24/7 even when demand is low.