Yeah I agree on this one, only thing they have in common is the name and some of the lore.....
Don't even know why it is still called guild wars 2 because there aren't even guild vs guild battles in gw2
Heck we don't even have a guild hall here.....
Guilds have so much less value here in GW2 compared to GW1.
More on topic:
Just try both and play them to at least 30 before worrying about this.
It's not usefull to try and decide on a main and a secondary character if you haven't even played the game yet.
For my opinion, I prefere to play the light armor classes over the others.
but they just better fit my play style.
So my advice would be to make a Sylvary Elementalist.
Don't like the heavy armor on those plants so for a warrior I would pick a different race.