And how many have the 49ers won in the salary cap era? ZERO. Hell, they've only been relevant a couple times.
Further - where were all you 49er trolls a few years ago? I'm partner in a neurology practice in San Francisco, and am down there frequently on business. Never saw Niner fans in the Bay Area until this last year or two.
I've been to multiple Seahawks-49ers games at Candlestick over the years, almost every game since 2002 actually. Back in the old days, I could pickup tickets to Candlestick for $20 by just showing up to the park and asking any old person if they wanted to sell their tickets. They'd be happy to sell them cheaply, even though I'm standing there in my Seahawks jersey.
The fans were notoriously quiet, too. I'll never forget how, during the Singletary era, Matt Hasselbeck was holding his hand to his ear after completing a long pass. There'd be like 100-200 people in the stadium. It was like a golf tournament.
My girlfriend preferred going to games in San Francisco because it was so quiet and laid-back. The only people at the game would be a handful of older fans who never even mentioned rings. You had to stay out of the 300 level though, because it would be full of drunk gangbangers who could never afford to attend a game in a real NFL city, but could easily get into Candlestick after buying tickets for $5-10 in the parking lot.
The "fair-weather fan" label fits almost everyone in a 49ers jersey. They didn't even exist until a few years ago, and only show up when they're winning. The 49ers have the weakest fanbase in the NFL, so I literally have to stop myself from laughing whenever they speak up.
Compare that to games I've attended in Cleveland, Detroit, Washington and Philadelphia - where the teams sell out even when they're doing poorly, and it's almost impossible to get tickets. I can respect those fans because they're there even when they're losing.
You never see that in San Francisco. My friends down there say it's just because you have too many teams to root for. Your average 49er fan over the last decade went through phases - they started out a Raiders fan, moved on to the A's, then it was the Sharks, then it was the Giants, and now it's the 49ers. Open up their closet and you'll find all kinds of team gear, but you won't find any Niner gear purchased between 1995 and 2010, guaranteed.