Please don't take McAfee seriously. His clownish antics with "coin of the week" hype have drawn much criticism.

Anyway, XML is a great coin and has lots of potential as already it is used by some applications for money transfer. Compared to XRP which recently had had a bit of a pump and dump, XML is going places.

Having said that, we got to be on the look out for new contenders like Zilliqa which could scale better than these coins and I saw somewhere its testnet has done 2,500 tps, which is a lot compared to most coins.