No, it doesn't, for a few reasons:
1) because that top 1% is 70,000,000 people. If the graph wasn't averaging them out, the top would be literally well off the top of the chart. When 85 folk have as much wealth as the bottom half, and 400 or so as much as the bottom half of Americans, we aren't being fine tuned enough to make the claim you are making.
2) It is showing percentages relative to previous incomes. A billion people moving from $1/day to $2/day is really good, like, if you feel what that means its overwhelming. But for the billion who experienced that, that's a billion in income growth per year. It took 20 years or so, so rule of 72 means about 3.6%/year gains , sum the gains, subtract $20 billion, that's I dunno, guesstimating here, $20 billion (I could be off by a factor of 2)? Meanwhile John Paulson made $4 billion in personal money in 2007. One guy made a quarter of the total gains of the biggest proportional winners in one year that an entire sixth (remember, 1988-2008) of the world population did in 20 years.
Let's get real, the actual money gains in this financialized globalized economy is mostly going to a handful of folks.
What the graph does show is that there are real gains from 1988-2008 for most people, and that's awesome and great. But let's not get it twisted.
Also, why does the graph start at 5%? How bad is are the first twentieth down at the bottom? Very sketchy.