This is a fun question because I just learned the answer today...

I had read about how guys felt a difference, but never noticed it myself. I haven't had a pro-honed razor for a year, and today I had a synthesis of my good stropping and improved honing where I put the razor to the strop and just knew it was ready... it felt like the linen was velcro (no joke!) and then it felt like the leather was sticky or something.

I think it takes a really, truly sharp smooth razor and good stropping technique to feel it (like I said, after 1.5 years of SR shaving this was the first time I noticed it) but it feels totally, completely different.