Board Thread:The Flash discussions/@comment-28354683-20160501172546/@comment-3423279-20170424013447

Because dealing with two speedsters at once might be difficult maybe?

Beating Barry was super easy, he was slower than Eobard and couldn't push him hard enough for his Speed to fritz out at inopportune moments.

"Jay" on the other hand was several times faster than Barry, if he suddenly arrived and tried to get on Barry's good side by helping him against RF he would have had to contend with two speedsters who won't trip at any given second.