I personally think Hot Toys does tailoring very well, Sparrow probably being their best work. And I don't disagree that you get value for your dollar--not only in relation to high end custom work, but definitely in relation to Sideshow's often mediocre 1/6 stuff. But I've not seen them really do better than Rainman's tailor. They might get close, but to "blow it out of the water?" That's ridiculous.
The Taxi Driver jackets are both extremely well done, the only quibble is really about the patches, which admittedly could use an upgrade. Have you seen them in-hand, to see the way the interior lining is done, the stitching on the pockets, the elastic bands, the zippers? Beautiful. Same with the McFly. The most impressive piece of that figure, to me, is the denim jacket, which may get overlooked.
And no one does better sculpts than Trevor Grove in my humble opinion. I would say that Hot Toys' record with likeness is about on par with Rainman's own sculpts, and that is to say, maybe 50/50 in the likeness department. They have had about 30 attempts at Tony Stark, and still can't get it. But I'll no doubt buy whatever their McFly figure ends up being, so I do hope they bring their A-team.
As for Kato, Hot Toys couldn't do the coat properly after two different attempts, and so they actually brought Kato on board to do it right. Doesn't that say something?