Actually, this mic, and in fact ALL Line 6 products, accomplish their designed purpose quite well.
They are designed and built to get people to buy them. Some folks "want it all," but lack the mountains of money that would be needed to buy "it all." So, they settle for a reasonable facsimile.
Modeling works, but only to a point (this is a well-established fact, I know I am not reporting anything new, here.) It has it's place- for example, I do quite well with
my Fender Super Champ XD, and had the pleasure of comparing it to a vintage Fender Champ Reverb. With a reasonable amount of knob-fiddling, I was able to make the two almost indistinguishable to my ears. That made me quite happy- I recorded the settings, and gave my friend Robb his amp back, with my thanks. The SCXD serves me well in most of my jam and rehearsal sessions. Would I take it into the studio? I might, but I'd probably bring my vintage Deluxe Reverb along, too, in case the SCXD didn't quite cut it. Actually, I'd probably start with the DR, and use the SCXD if I needed something the DR could not deliver- which illustrates my point, I think:
Modeling gear can get you close, but if you want to REALLY get "that sound," you gotta go back to the original.
But frankly, for 99.9% of all live settings, "close" is plenty "close enough." I've said it before, and I will say it again: No one really needs to gig or tour with a valuable, pricy, touchy, damage-prone vintage tube amp, when the amp is FAR from the limiting factor in a live setting. Even the gear-head/tone-questing guitarist in the freakin' FIRST ROW won't be able to discern
a Peavey TransTube Bandit 112 from a Princeton Reverb, in 99.9% of the live venues and shows he might go to, by sound. And yeah, that includes YOU, no matter HOW discriminating you THINK you are.
But saying Line 6 is "going to turn the mic world upside down...?" Come on, hyperbole is both not needed, and very off-putting. It will do no such thing.