B: Don't know your definition of wide limbed flat bows, but NMs and Hills aren't, IMO. Yes, J.D.'s bows are about an inch at the fade outs. I have a Vixen and Valor that are, a Taipan that's about 1 1/16 at the fades. Also have a couple of NM Sheltons that are 1 1/8 inch or a tad less at the fades. A couple of Jets I own are close to 1 1/16. I no longer have any Hills, but i don't recall them as being particularly wide either.
I have seen some ASLs that are 1 1/4 and even a little wider. I would consider those outside the normal parameters of an ASL, but even then, not of flat bow dimensions, which are in the 1 1/2 to 2-inch widths.
Regardless, I consider all of the bows I mentioned to be quality bows, and given the same design -- straight, backset or string follow-- weight and length, I would be hard pressed to decipher any shooting characteristic differences based on a sixteenth or eight inch limb width difference.