The batting you saw at JoAnn's is Pellon Legacy. The natural cotton with scrim is their version of Warm & Natural.
I haven't used it, but Pellon says it's thinner than W&N and is supposed to have a better drape. Thinner is not necessarily better in my book. I do know it's wider (96" vs 90" for W&N) and it's cheaper, at least at JoAnn's.
Some claim they like it because it doesn't have the flecks that W&N has (had), but W&N doesn't have flecks since they upgraded their cleaning process.