>>11878521No. Lesnar took a well deserved receipt from management for the way he lost in 2004, Cena got a rebound win after losing to The Rock, and while everyone remembers the match itself, no one really cared that Lesnar lost it by the time he ended the Undertaker's streak.
I think Lesnar feuding with HHH for three matches after the Cena match did much more harm before he rebounded at WM30.