Board Thread:Questions and Answers/@comment-24546423-20140318103705/@comment-24471578-20140918042736

Yes there is the whole "practice" dynamic but bear in mind that aliens such as diamondhead, fourarms, and heatblast have been with Ben since he first got the omnitrix therefore he is more skilled at using them. However, Bliztwolfer was not only introduced close to the end of the original series, he hasn't been used as much, perhaps not even at all off-screen. Rath has been used multiple times on-screen and there is the chance Rath has been used more than Blitzwolfer.