Well looked into the metroliner on wiki and it says that it was equivalent to the Northeast Regional service trains(amfleets II and an AEM-7 locomotive) speeds of 125 mph,while the electroliner reached just over 110 mph(sidenote: but the train would reach crossings before the gates dropped all the way!!!!)
Also their service dates:
Metroliner 1969-2006
electroliner 1941-1976
so the metro wins
But these trains are nothing alike its like comparing the elcapitan to the super chief,both passenger,both close service years,(both ATSF)but completely different,and
if you ask me the electroliner wins
because it is better looking(as in looks like it has a locomotive not a cab car),and probably better service.