If you look at the way that points are awarded in Fantasy Fishing rules, you are awarded the same number of points no matter how many other people have picked a particular angler.
HOWEVER, (my personal take),
If everyone is picking a certain guy, I stay clear of them for the most part. Take Tharp, for instance. Obviously the man for the job on Okeechobee. Knows the lake as well as anyone does and has multiple wins on it. He has a knack for understanding the fish at Okeechobee, even under tough conditions. Loves to flip and pitch. Has a fantastic track record on Florida bodies of water. I easily foresee him getting a top ten. But, he's at like 50+ % ownership, which means that there are a crapload of people who have picked him. What this means for me, who picked a dark horse in bucket A that I feel will do fairly well, is that if Tharp were to stumble and not make the top 50 cut or something - there are thousands of people in Bucket A that will drop heavily and that I can all pass up. For an individual tournament, it doesn't seem like a big deal, but if you're consistently playing by that method throughout the year, crap will go down and tournament favorites will zero. That's when I personally have made big strides in standings. Yes, I probably will end up regretting that I didn't go with Tharp, but at the same time, you have to set yourself apart from the crowd in Fantasy Fishing.
That's what makes it so fun for me, I love finding the dark horses that do well and slip under the radar.