Originally Posted by
EllieShadeflare
It certainly does, but that's because you're thinking only of bursts. Summoner's strength lies in sustained damage, and the fact that they can constantly have at least 300 potency of damage per 3seconds, without any need to worry about serious clipping or losing potency or similar. However, on top of their sustained damage, they also have powerful oGCDs (Fester, Deathflare and Akh Morn) that can inflict serious damage.
And Samurai is compared to SMN simply because of SMN's overwhelming damage... just as it would be compared to Black Mage for that matter. But if you wanna compare SMN to BLM, SMN objectively outperforms BLM in terms of DPS, even if numbers "feel" low.