Will increasing speaker cable AWG make a difference in sound quality?

When you go up the AQ (and some other manufacturers) cable line you don’t only get bigger gauge wire. You get better quality materials and better connectors. You have to figure all this into equation. And connectors do make a difference.
All being equal, will you hear the difference between the same quality cable of 12 and 10 awg terminated with the same connectors? I guess it’s possible but depends on a lot of other factors.

I learned something about cable here, always been wondering why cables sound different from each other when they should not have, especially for the better-constructed ones.  

Snake oil at its best!!!!

Maybe the only way to know is try it.

I was given some heavy networked speaker cables years ago, but changed to a much lighter easier to handle 8 stranded set of 13 gauge aggregate braided wire.

No change for the worse, and having had my speakers apart, I know it's many times thicker than the  internal wiring, inductors, or capacitors they use.