As you should! "Poly" is not one single thing; there are air-cure polyesters and polyurethanes, there are catalyzed polyesters and polyurethanes, and there are UV-cured polys. All of them vary in their hardness and durability even across brands because the recipes vary. Some polys are quite soft. Exterior-grade polyurethanes are really soft compared to interior-grade versions.
I always get a chuckle when players gripe about whether wear is "honest" or not. Who cares what anyone else thinks? If you want a 'relic' finish, have at it. It's your guitar. You like Antigua? GO for it! If you like glittery sparkles in your guitar's finish, you can get that too. And if Jeremy GuiTardo has butt-hurt over it, he can go pound sand
Man... your dent reminds me of a dent I have on my 56 Gold Top reissue. Brand new and I had the dang thing for 1 week. Was in rehersal when, all of a sudden, a mic decides it would rather be on the floor than in the stand. Oh! And why not hit a brand new 56 GT on the way down eh!?1? LOL!!! Yep... much like your dent, pretty much same place too... oh well. Excrement happens