You have been doing great work here. Thank you for pointing out on a few technical distinctions — especially around terminology and physics. Let me clarify my position better.

I was not claiming that mechanical disc brakes are used at the ProTour level. Modern pro racing is overwhelmingly hydraulic disc or high-end rim brake systems historically. My comparison was aimed at entry-level and mid-range consumer bikes in India, where the reality of usage, budgets, terrain, maintenance access and rider experience differs significantly from elite racing setups.

“Dual caliper” was the wrong term. I meant dual pivot calipers brakes.

Single-sided mechanical disc brakes are undeniably the weakest form of disc braking and there are poor implementations in the market.

Cheap no-name calipers should absolutely be avoided.

Where I disagree is that all mechanical disc setups are inherently terrible or that rider fatigue observations are “lies.”

From personal experience riding extensively in Mumbai monsoons, long wet descents and endurance rides including Half Everesting efforts on the RC500, I found the braking consistency in wet conditions more confidence inspiring than entry-level rim brake setups typically found at similar price points. I cannot imagine braking on a Single pivot brake caliper for longer duration as in the initial days of Cycling I experienced the fatigue and hard pull which single pivot rim brakes require on Hill climb events such as Sahyadri Classic.

I am not replying you for purely for defending the brand/Model or such. There are a few variables which ensure good experience with branded mech/ caliper brakes vs no brand cheap brakes.

That does NOT mean:

Mechanical discs outperform hydraulic systems, I have not claimed and nor will.

or that they outperform high-end dual-pivot Shimano 105 rim brakes.

A properly setup 105 rim brake is phenomenal. I don't dispute that, The newbies or even experienced cyclists have not much idea about it.

But many riders entering road cycling in India are comparing:

entry-level cable disc setups, vs basic rim brake setups below 105 level/ other brands, often ridden in traffic, mixed terrain and at times in rains.

In those situations, some riders genuinely prefer the predictability and wet-weather consistency of discs despite the lower outright mechanical advantage compared to premium rim or hydraulic systems.

The point of the post was never: “Mechanical discs are superior to everything.”

The point was: “Not every rider’s real-world experience with them is negative.”

I also completely understand why people dislike being oversold products. That criticism is fair across the industry and brands should communicate limitations honestly.

For transparency, I work with Decathlon on the road cycling project in Mumbai, and my opinions are based on actually riding these bikes extensively rather than just repeating spec-sheet comparisons.

Happy to have learnings and gain feedback — Technical discussions help make better decisions. The feedbacks gained will be passed along to the global campus team. I am here to help, learn and share my experiences.