Not trying to down play this buck and score means absolutely nothing to me but.... High scoring deer, not that 157" isn't (the highest scoring deer) all have two things in common. Tine length and well tines. This buck has nice ones, twos, and threes but is lacking on fours. Again not trying to take anything away from it. It is substantially larger than any buck iv'e ever put my tag on.
Generally to get a truly high scoring typical buck you're going to need some long fours. It just goes to show how hard it is to get an established age class and then on top of age have the genetics to pump out some Booners. They are just not that common to say the least.
Congratulations on a great buck with an even better story behind him. I have to assume that if not for that wound this buck would have grossed another 10+" but who knows.