Exactly. It's not easy to sail around in a Snow for the vast majority of PVP. That's why one does it and not everyone.
There are captains who have sunk me in short order, it's just because they've properly equipped their ships and know what to do. Most people panic, miss shots or go for demast. The problem isn't the ship, it's the competency of the captain. Sure, there are some ships that are harder than others to kill, the Essex (despite having no rear guns), Cerb and Hermione and to name just three but the skill of the captain plays a major part.