When talking bike weights, one should always consider what accessories. Manufacturers will usually quote a smaller size, no pedals. For real world riding, it still makes sense to call out pedals, cages, lights, saddle bag. A friend of mine was complaining his brand new Fairlight Strael was 22.5 lbs… with all those things, but then comparing to Canyon’s online weight listing. Add 300g to the Canyon (for pedals), and take the saddle bag and Assiomas off the Strael and you have a better comparison. The Strael will still lose, but it’s a matter of <2 lbs instead of 5 lbs.

With regards to braking, going down an 8% grade and hitting ~30mph, my Ultegra hydraulics haul me down faster than my Force rim brakes (stock pads, Campy Zondas). I’m also fat, so there’s that. But at the same braking point, the Ultegras stop me about 10ft before the intersection, the Forces about 3ft in. Luckily there was no cross traffic that day. However, I do have bigger contact patches on the disc bike - an effective 28mm (GP4k SII) on the back and nearly 32mm (UltraSport 2) on the front, vs 26mm (Michelin Endurance 4) on the rim bike, so that could definitely impact lockup point.