I probably am, though I generally try to use standards that have evidence to back them up. That way if I say, “Oh, I’ve done 75% of the work on this paper”, I can point to where I found 75% of the references, wrote 75% of the words, something. I don’t like to just randomly estimate because of things like overclaiming. I try to be as accurate as possible. When we had to do these estimates for class, I would start everyone at equal then subtract from people who’d slacked off and added that to people who’d gone above and beyond, but generally kept myself at the starting point.