The exceptions are when the UR version of a certain card happens to have a specific feature that the SAR version doesnt havesuch as the aforementioned Ns Zoroark ex cardor when for whatever reason, the SAR card just doesnt land with the community
Being the rarest Pokmon of eight generations, it is par for the course that a Mew card would be rare as well
Situationally asymmetrical sweepers are always interesting and almost always very balanced, so the card is likely to do limited good to the coming standard format without harming it in any way
For instance, if its 0.3% instead, that puts it in the 1 in 1500 range, which is more likely
Uncommons are a bit more complicated since the planeswalkers might have slightly different rarity, but 20 of the 80 uncommons are planeswalkers
Draw Surprisingly for a white deck, we've already got a lot of card draw built-in thanks to Odric's Blood tokens