In terms of affecting the country, Tubman was a nothing. Stowe had massive influence. Lincoln Jokingly credited her with causing the civil war.
In terms of impact to the entire nation, Stowe was massive, and Tubman was nothing.
Also, I can think of many other American women who are, arguably, more influential than Stowe.
And if you put them on the list of All influential Americans, the women won't score high enough on the list to warrant being placed on currency at all.
We have no Margaret Thatcher in our history. We have no women of major significance.
“We have no women of major significance.”
Well, that’s your opinion and you’re entitled to it. Although I wouldn’t mind having Thatcher on our money. ;)