It may not be a good idea to measure DDoS merely based on the volume. For example, a 100Gbps L7 attack is much harder to mitigate than a 100Gbps L3 attack. [1]

It may not be a good idea to measure DDoS merely based on the volume. For example, a 100Gbps L7 attack is much harder to mitigate than a 100Gbps L3 attack. [1] Also, some had previously questioned the accuracy of CloudFlare's figures. [2] [1] https://blogs.akamai.com/2013/03/how-big-is-300-gbps-really.html https://blogs.akamai.com/2013/03/how-big-is-300-gbps-really.... [2] http://www.techweekeurope.co.uk/news/prolexic-ceo-scott-hammack-biggest-cyber-attack-lies-spamhaus-113551 http://www.techweekeurope.co.uk/news/prolexic-ceo-scott-hamm...