ok, ill answer this from experience...
It is idiotic to even label a persons abilities by the PLACE HE WORKS...
Having worked at our local gander mountain, i can say that i learned a ton from some of the older guys working there... and i would completely trust any of em to work on my bow. Now there is always the local idiot, big shop or little shop... Its just a matter of finding the right guy to talk to..
Now my local shops suck, 98% of the guys working in the crappy shops are know it alls that dont know it all... they assume working at a bow shop makes them a level above you... They are brand fanboys who think if its not a bow they sell, its junk and they have tons of recalls, right

I have had some horrible experiences with shops, but i try not to attach that to a shop, but the people working at these shops. But dont get me wrong, they arent all dumb and there r still some great guys that work at local shops whom id trust but im just trying to point out that local shops arent the bees knees all times
The local shop i love and respect around here is Handee boworks, small shop with low amount of hours but the guy is a great guy who is very knowledgeable... and hes a bowtech dealer and i shoot a mathews but hed never give me crap for shooting a mathews
One thing that also sells me on big box guys, or the ones i worked with were completely unbiased, theyd say great things bout any bows, this is partially due to the fact that guys at big box stores arent making commission.... least not at gander. I think the fact that they are non commission makes them more trustful in honest because they arent making money off of selling you stuff... they just want you to have a good experience with your equipment, and i know as long as i worked at gander, if i thought someone was buying a sub par product or a product they didnt need, or a product for a higher price than they could get it down the road, i flat told them...
Archers helping archers... thats what its about