Excellent. Yes, let's go there.
Over the course of a year, $18 billion were lost to CC fraud. Meanwhile, CC transactions totaled about $6 trillion [0] (that was 2010, the most recent I could come up with, but it's been increasing every year for a long time so I'll be generous and use it). That's .3% - clearly affordable on the 2-3% merchants typically pay.
Meanwhile, Mt. Gox defrauded users out of about 650,000 bitcoins [1]. This was a single instance of fraud, remember - I'm trying to be generous. Eyeballing this chart [2], I'm going to give bitcoin a clearly-exaggerated 200,000 BTC in daily transactions, or 73 million BTC in a year. This comes out to .9%, or about 3 times higher than CC fraud.
But remember what I said earlier - CC companies essentially insure you against loss by paying out the fraud themselves and then forcing merchants to raise prices a bit to make up for it. In bitcoin, a given person can easily lose thousands, tens of thousands, millions of dollars, all at once. No recompense. So not only is the rate 3 times higher, the outcome is _way_ worse per dollar lost fraudulently.
[0] http://www.nerdwallet.com/blog/credit-card-data/credit-card-...
[1] https://coinreport.net/99-of-mt-gox-bitcoin-losses-likely-fr...
[2] https://blockchain.info/charts/estimated-transaction-volume