You know, I kinda think you're right although I don't usually pay enough attention...
I went out and put a long string on and pulled it to 37@ 27. Lost a bit in the clean up, I guess. Then I put the proper string on at full brace and it was very close to the same. I noted the tip position with both strings and it was about and inch less on the long string. This is going to take some serious thinkin'. I've heard you mention this before but I never had the need to actually bend and measure.