From 8640 packs of Surging and 1260 packs of Prismatic, the odds that the two have equal pull rates are around .15% (Z=3.17), so yes, the difference is significant and is very likely not just a lucky batch
This ability is incredibly useful, primarily against decks that heavily rely on ex Pokmon being the primary attackers, removing any opportunity of them being able to knock Sylveon out
Instead, there is nothing players can do with their extra commons
The alternate art of Mew VMAX has thus far seen the lowest circulation, coupled with an incredibly high demand, which makes it one of the rarest cards in the Fusion Strike expansion
Just because these cards would be good, however, doesnt mean Wizards should print them, however