My philosophy is there, will always be someone quicker than you.. If i ask someone their running time, and i am quicker, i will say it, but it just general banter. True runners will never get into a pissing contest, since the person we have to impress the most is our selves.
In my mind it is only the person that came first who is the true runner, and has the right to revel in his / her glory. Its always interesting to compare times. Its human nature. I am just naturally curious. If someone is quicker, then i want to know what makes them quicker, what training they use, so i might improve mine.
I have done some quick times, but then i have had injuries, and found my times suffered as a result. Its kind of an up and down battle with myself.
Unless you do the exact route in a training run, you cannot compare times. Also some people run better in the morning, or the evening, or when they have had a few days break.