Yea it is a lot of muting and I'm also strumming hard on the low strings after the envelope really closes to accentuate the mids. I've found that If I don't "play" the filter, it never really sounds dramatic enough. I have actually started to like this attribute and by merely changing timing, the guitar sounds completely different with this particular patch.
My SC250 has hot pickups, so I had to alter the amp from the youtube video a bit, but I also added a BB pre. The filter had to be dampened so that with my particular hand technique would close it just right. I also modified the tail end of the envelope to ease out. The other part I added, after watching the live in Mexico rendition, was more modulated delay (you'll hear it subtly when he transitions through the song, but I left it more prominent, because I like the jingly sound it makes).
I've never had an A3, but I'm guessing this song is easier to play on that unit?
I'll upload the patch soon - I haven't been home enough to get it done. Last time I used Axe-edit, it blue screened my Windows 7 machine, so I try to stay out of that program.