*laughs* I love Mario and Sonic Guy.. never disappoints.
Anyway, it is definitely true that perfect shields are considerably easier to perform in Brawl than their Melee counterpart. Perfect shield in Brawl is actually like.. possible to consistently perform, whereas there were very few top-level competitive/professional Melee players who could power shield with any comparable regularity, as far as I know.
That said, recovery after a perfect shield is incredibly short, and will pretty much guarantee you the ability to react long before the opponent can. Any edge is one that should be taken advantage of, and with the increased ease of perfect shielding, I don't think it will be at all surprising if it plays a heavy role in competitive play. With Brawl's shift towards a defensive attitude, it's clear that shielding in general, and shieldgrabbing is going to play a very large part in any competitive Brawling, and the ability to react even faster, with perfect shielding, is not one that will likely be overlooked.
My 2 cents.