Blind taste testers that are BJCP certified are much better judges than someone who knows which one was brewed with a different yeast. If they didn't really indicate any major differences, I have a hard time believing there is one.
Not to knock the yeast, I am sure it is great, but I don't order from AHS, and was thinking of doing so just for that yeast. No sense in that for me unless it makes a difference.
I'll post the scores and comments from the certified judge
Greenbelt: 32
Aroma: Floral hop boquet, some sweet malt, grassy. Some yeast esters as it warms/settles (9)
Appearance: Muddly light brown, thich white head with excellent retention (1)
Flavor: Sharp hop bitterness, malt sweetness behind with a touch of crystal/caramel (15)
Mouthfeel: Medium body, highly carbonated, lingering astringency (3)
Overall: Base recipe has decent IPA character with perhaps a touch too much crystal. There is a lingering harshness which escapes explanation, possibly some grain flavors? (7)
WLP001: 39
Aroma: Sweet, midly floral, light hops (8)
Appearance: Hazy amber, thick head, good retention (3)
Flavor: Grapefruit, light malt, a touch sour, hint of metallic, finishes with a nice balance (16)
Mouthfeel: Medium-light body, highly carbonated, a little creamy (4)
Overall: Nice clean IPA, hops are sharp, sugars balance reasonably well by are not very notable. Quite a citrus-fest (8)
So - In this case, this judge preferred the beer made with WLP001.....