I'd have to agree....
I've been using 17" MBPs from the beginning, and I've been agonizing over how long will I buy used 17" MBPs vs the retina macbook Pros. I've been a resolution fiend from the beginning - I had 1600x1200 resolution on a 2001 ThinkPad. But when I try the rMBP in 1920 mode (and I REALLY WANTED to like it), it's actually worse - the interpolation makes things blurry, compounded by the smaller screen. And 1,440 mode is just too cramped for me.
The only caveat is since I don't own a rMBP, I've never been able to try it in native 2,880 resolution using those 3rd party tweaks. Although physically small, that might actually be clearer and cause less eye strain than 1,920 mode...