They sound nothing like Watchtower. World Circus is straight-forward speed/thrash with maybe a little more guitar flash than ordinary, more Agent Steel style if anything. And it's not a remotely good album. Think This is more trad/power/prog than thrash, and still far from the underground masterpiece it's sold as. If anything it's Roadrunner's budget attempt at pumping out something high-gloss and high-minded, hoping for the next Operation: Mindcrime or something but falling quite short. It's still good and pretty diverse, but the tech elements are again more about guitar pyrotechnics than anything, and it's a rare metal album where I think "over-production" actually means something.
They have absolutely nothing on Watchtower or Realm. Not even Damn the Machine or Kinetic Dissent tbh.