$Moderna, Inc.(MRNA)$$Pfizer(PFE)$

Am I missing something in my evaluation? For the same situation, why is Moderna’s increase more than 25% while Pfizer’s increase is less than 8%? Especially if you take into account that Pfizer is actually the preferred vaccine and also came out with response time of approximately 100 days to evaluate and tweak to the new variant. Plus it is also appearing to be the better oral meds (with Merck fairing only 30%).