User blog comment:Thailog/Ep. 206 "Bloodlines" discussion/@comment-77.220.15.130-20120603162051/@comment-71.126.68.241-20120604153806

Wally was the second fastest Flash out of all speedsters, only beaten by Barry. The fact that Wally isn't fast now means next to nothing since, like all speedsters, he'll gain more access to the speedforce. Impulse also aged rapidly in the comics so we don't know if maybe he's a little more advanced for his age since his powers are developing faster.