You're correct from a chronological perspective, of course, but the way people talk about bass guitar tone tends to be stuck in the time warp mindset where if you have clear highs and big lows and lots of attack, it's considered modern regardless of the fact that bassists have been playing with those kinds of tones for 30+ years (perhaps Marcus Miller started it all?). But I think there's a perception where if you sound like Sly & the Family Stone, you're playing with vintage tone, and if you sound like Flea, it's considered modern. Not all slappers slap with that kind of tone either, Claypool and Stanley Clarke certainly don't.I would have to fact-check to be certain, but I believe that TC has "only" been making bass amps since 2009, whereas GK has been making them since the 1960's. Just as a matter of simple chronology I would say GK is more vintage. I'm sure GK has made minor tweeks to their bass amp Eq, but from what I have read, it remains mostly unchanged for many years. GK may sound more modern than an old Ampeg flip-top or Acoustic 360 for example, but to my ears, compared to TC - TC is more modern.
I think TC's Tone-Print feature is interesting, but not enough to override my preference for the GK tone.
I just feel like TC has a basic tonal character that sounds more like Ampeg/Aguilar/Fender, i.e. what people often refer to as vintage tone, than one that sounds more hi-fi like GK. All these amps can actually get into each other's territories pretty readily, but I feel that there's the sound that these amps want to be making, and TC generally wants to sound like a vintage-style amp.