Welcome to the club! I just finished the Grand Experiment and my experience especially the last months alternating just two razors every day is that I got about 20 or so shaves from each razor before it just got too uncomfortable. And as you said when I shaved with a different razor that was sharp I realized the degredation in the other two. I think its like everything else if you drive a car without servicing it for a long time it slowly degrades and you don't realize it until after its been properly serviced and then you say wow this thing drives better. No different with a razor as long as it slowly degrades you have no frame of reference and you adjust to it. Only when the shaves become poor or the comfort intolerable you finally realize it.

I saw some of the posts on this on the other site and I just scratched my head with people's claims about going for months without honing.