I have never head Airbitz .To my surprise how come Electrum and blockchain.info has made it to the last at such a abd position.Blockchain.info is the mostly used online wallet by all the bitcoin newbies ,I reckon.QT should have been the second most used,can't argue with Ledger ,its right in its place.Where have you gotten the stats from anyway ? Xapo is not even in the list ? That's bad too!
Why is Armory so low on the chart? Also, I don't think that hardware wallets should be mixed with software wallets... Sad to see Electrum so low too.
True,no one uses hardware wallets for the sakes of daily transactions.