I don't think so. I've been bigging up Jonjo all season, but I was really disappointed when he replaced Spearing. The fact of the matter is that both Lucas and Spearing are fairly limited players, but as part of a functional three man midfield, they do end performing their roles really well. Spearing ran his gut out today, and tried his best spraying the ball around. That didn't need replacing. It just needed a third and willing runner and it would've changed the game significantly.
I don't think anyone would say that Lucas and Spearing are good enough in the long run (to be Liverpool starting material). But when they're the only available resources, it's imperative we utilise their strengths. And we didn't today.