Hey gang. My postcards have arrived. Quick note - it appears that unlimited set IS the exact same as the one sold at NYCC. Didn't expect that, based on what I read on the site, but I think that "Perrified" has also been corrected on the page at the Topps Shop.
That M&M's parody IS a variant, but only a variant from the Limited Set. The Unlimited is a parody of M&M's Peanut, the Limited set is a parody of M&M's plain.