User blog comment:ImperiexSeed/To those of you who think the RF was trying in 1x22, then why didn't Barry just have the Arrow defeat the RF in 1x09?/@comment-3481504-20150607024715

How come a normal arrow with some nanites in it could neutralize the Reverse Flash for a while, but it took a horse-tranquilizer to stop Barry which he just shrugged off?