You probably need to take a little step back and view the professions for what they really are! : )
Dual-wielding swords in the traditional slash/stab & bloody way is a thing that only warriors are capable of doing. They run up and slash, quite forward and simple, direct damage.
Mesmers on the other hand, use offhand swords defensively, and they are not a direct combat class, favoring the use of illusions to distract and harass. So you won’t be running up to attack targets like some kind of spartan warrior. Instead you’ll carefully block, make clones of yourself and use a lot of evasion and misdirection to keep yourself safe while in close range of the enemy.
In short: warrior. It’s the best beginner class and it’s very satisfying to play, even for people who are familiar with the game mechanics. They also won’t take anywhere near as much damage in melee, and have the highest health (along with necromancers).
