Hero or Cannon Shooter for a STR-based class?

I'm making a new character, bored (or more like annoyed) with Kaiser.

I already have a lot of STR equips, so I'm looking to make either a Hero or a Cannon Shooter.

What one of those two classes has more of a... ease of leveling?

Also how is the damage on both of them?

Heros are, in my opinion, abysmal to train.

I really enjoyed training my Cannoneer up until 4th job. Cannon Spike was a lot of fun, but the laser at 4th job is awful in comparison... compared to Hero though I'd definitely say Cannoneer.

They're also both very strong, but I believe Hero comes out on top, Cannoneer will easily win on leveling speed.

Since you already had a Kaiser, go for hero. Just transfer the stuff and you could even go 2h sword.
Heroes are more stationary where as cannoneers had a lot of mobile skills both vertically and horizontally.

I wouldn't know about the damage about it though.

Personally if I was in your situation I'd play Hero because you most likely have those STR equips for warriors, and not pirates. If that didn't matter I would without a doubt choose Cannon Shooter just because I like to train and it seems like the cannon laser skill would net you faster exp than using RB.

Make both without gear first and compare them.