I totally disagree with the above comments, it is VERY important that you have a benchmark to compare to, this way you can be very critical of your own performance. Obviously you can not compare yourself against someone who is making seven figures, but you need to have a few benchmarks if you work for a professional firm. It is a huge advantage as you can see how different styles work in different market environments and continue to refine and tweak your own style.
I keep three benchmarks at my firm, I compare my consistency against F, whose trading size is much bigger than mine but every bit as consistent, she is up 100K and I don't think I can catch up this year, but next year I will be looking to compare actual P&L's as I pick up my size. I also compare myself against P, who I used to work with and showed me 10/20 EMA (which I no longer use), he was up a lot earlier in the year but blew up and now I am just 10K away from catching up, I have a huge edge in him in consistency but I don't make nearly as much size on big day's, my goal is to be consistent and eventually pick up my size so I will totally destroy him, but as of now I have a hard time beating him on good week's but destroy him on bad week's. Last but not least, I use M, a newer trader as an "alarm", if any week I lose to him I have to be very very critical of my own performance as he is newer and trades essentially the same way I do, even the way we manage trades is similar.
The key is to find people who trade your style, and not too far ahead of you, so you always have someone to catch-up to and push yourself further. All of my benchmarks trade more or less a variation of my own style, and competitive spirit never hurts.
SBK:
Trust me, no matter how badly the guy traded for a year, he has that extra year's worth of experience on you and is more comfortable with size, that is a huge edge, not to mention looking at all those stocks and tapes and familiarize himself with it. Mrs F has 4 month's worth of experience on me and I feel like there is a substantial barrier. Unless the guy is total garbage (and if so, why would you even compare yourself against him?), you are not supposed to beat him when he has almost an extra year's worth of experience on you.
Take your time, but DO compare consistency, I am flattered that you are trading my style despite of the fact that I put up small potato numbers, and I can tell you my strength is in defense (supremely tight stops and aggressive pare in/out's) and consistency, and my ability to hit big game's is still lacking. Work on your consistency first, then bigger day's . . .
P.S. As of now, you too are a benchmark I use to determine how well I traded, as if you beat me on any given week I will be very upset (and I should be with more size and experience), but the day I don't feel that way will be the day I give you my IM and we will start sharing trades together
