Sainsburys Tomato ketchup

Tomato ketchup has always been Heinz so I thought I'd try a different brand for a change.
This time I tried Sainsbury's.
Clearly the taste was so different.
It was tasted like more like tomato puree so you get strong umami from the tomatoes and it was quite sweet and vinegary at the same time.
I felt that if I was served this in a restaurant, I would be impressed because it tasted like a natural ketchup made with real tomatoes but because it is a supermarket dupe, it felt like a bottle of cheap pasta puree.