Better all time uppercut?

[Barn]

Johnson had a very primitive uppercut, boxing wasn't quite the sweet science back then.

Both Bowe and Lewis had great uppercuts, however Bowe was able to use his more Effectively, Lewis was very safety first and often didn't throw it.

How?
Johnsons uppercut was extremely tight and he seemed to generate most power by sort of shifting, so it was very hard to see coming, making it a deadly tool in the ring.