In the case of the Sandisk card above i would think it is the U3 / V30 rating that do the trick
My kingston canvas select plus are U3 / V30 but only A1, i have a few other cards that are so too but not having any A or V value stamped on it, for instance a older Kingston U3 card and i would assume my old Trancend ultimate though it have most of its stamping removed as if someone have been handling it very much, which i have not, it is probably the least used of my fast U3 cards as it just idle in my osmo action camera.
As i understand it the command quing and cache are only something that get used if the device support it ( the SOC i assume ) so it could be the TW camera support A2 but it is just not written anywhere,,,,, which it should as it would be bloody important shopping for a memory card.
But if it are not supporting A2 in the camera, then it must be the U3/V30 specs,,,,, or just the camera fancy these cards more, cuz as we have seen some brands are a bit fuzzy about what cards they like, other brands not so much.