[randomswede]

If you are selling A as A-prime, you can be a snake-oil salesman even if you are supremely skilled at A.

In Lars' case, he is from what I can see a supremely skilled instinctive archer. There are some historical documentation, from some regions ,documenting feats that Lars is capable of doing.

But, "feating" and "combat skills" are very different things (well, they are for sword disciplines, I will blithely assert the same is true in archery). Yes, both require skill. Yes, training one discipline can improve the other. but they're not the same. Just like how writing Haskell (or Lisp) can make you a better C programmer.