I think Taylor's best instruments, including BTO's, are the equal of those from the smaller factory guitar makers like Santa Cruz, Collings, Bourgeois, Huss and Dalton, etc. I wouldn't lump Olson or even Lowden in with the others, however, as now we're in a different arena, smaller operations producing anywhere from a dozen to a hundred instruments a year. Those smaller luthiers are usully constructing instruments on commission, with traits specific to the player. While Taylor construction and playability is the equal of anyone, the playing experience is a bit more generic when compared with Olson or, say, Froggy Bottom, which produces around 100 instruments a year.
Go into any shop with a large inventory of Taylors, or go to a roadshow. You can pick up any Taylor and strum a bit, fingerpick a bit, and they all sound great. Of course you can drive a DN, GO or GS harder than a GC or GA, and there are many different tonal flavors from the myriad wood combinations.
Now go into a shop like Maple Leaf Music in Vt. which carries Collings, Froggy Bottoms and other higher end instruments. Time I was there, they had 8 different Froggies. Each different model had to he played differently to bring out the best of the instrument. And that best was really special.
The expression "Swiss army knife" that Taylor applies to its GA model really applies across the board. I even found at the Woodstock Luthier Showcase that some single luthiers were showing beautiful but rather generic-playing instruments. Are they any "better" than Taylors? I don't know.