Heavily laden panniers? That means you must have a pannier rack
We are not talking about bikes for beardy weirdies to ride to country pubs here. Proper road bikes, where the thought of attaching more than two bottle cages would be aesthetically displeasing, that is what most of are thinking about.
Yes, I am joking, a little, but some of my point stands. If you have panniers you probably want more stopping power, don't think anyone would disagree with that, but on a pure road bike they are unnecessary. I think it is safe to assume that unless otherwise stated that people on here are talking about some sort of dream machine weight weeny carbon fibre bike. We do all after all still like to think we could be just a bit faster if we had one of those.
Oh yes, I completely agree. I don't lust for them on my best bike. I do think of my dear Eeyore as a road bike though although it's got the rear rack. I mean I always pump its 23mm tyres to 100psi as I can't fit 25mm tyres under its mudguards. Oh, I see your point.