I also don't think there is a right or wrong way to rate those 3.
Anyway you put them you can have an great arguement.

It boils down to what you put more emphasis to and also in some cases who you are biased for...
For me neither of those 3 are favorites of mine, I like them and I enjoy their fights and they are all time greats.
I probably enjoy Hearns the most of those 3.