Ayew struck an 85th-minute equaliser and substitute Narsingh netted a 90th-minute victor for Swansea after Peru forward Andre Carrillo gave Watford an 11th-minute lead with a close-range header after visiting keeper Lukasz Fabianski could only parry Richarlison's fierce shot from a tight angle.
"Now 98 people will be saying it, and maybe two people are saying maybe they will not". We are still not in a good position. Me, the players, the chairman and the fans are not in the 100 - we believe we can stay up.
"It is not because we win one game it will be paradise, flowers and birds - it will be very hard, we have a difficult game on Tuesday against Tottenham, who have not played this weekend".
China defends sanctions work after report of NK oil transfer
The US Treasury Department later placed six North Korean shipping and trading companies and 20 of their vessels on sanctions list. Abe's comments come as the U.S. pushes for the United Nations Security Council to vote on harsher sanctions on North Korea .
Watford then dominated proceedings and had a Molla Wague goal harshly ruled out for a slight shove on Tammy Abraham.
The equaliser came from a knockdown from Oli McBurnie, and fellow substitutes Narsingh and Nathan Dyer combined for the victor. They won a second ball, and even after that we needed to keep focused.
"The first goal they scored looks a small offside".
"We created chances to score and we had a big chance moments earlier".
He said: "It's our job to find out why we can not kill games off".