[Arvan]

A few things to understand about warriors on p99 to give context to the question...

You wont hold aggro at lower levels period (basically until high 40s-50s when you get access to good dex gear dex buffs and weps) Best bet is to have a caster in your group root every mob and use proximity aggro.

You will be the puller occasionally - grab magic resist gear as soon as possible and ask for resist buffs to avoid getting rooted trying to bring mobs back to camp. FSI doesnt help with the insane stun from the back that was recently added on this server. Its real bad.

When you do eventually start holding aggro by yourself with proc weps and item clicks for raids getting stunned can kind of matter but not really, its not as bad as getting a spell interrupted as a caster for example. Also for clickies that have a cast time you will be interrupted 100% of the times you get hit because a warriors channeling skill is zero. Spell will be interrupted whether you have FSI or not.

Ogre is a good race to pick for warrior because of its stats allowing you to wear less str/sta gear and more raw hp/ac/dex/magic resist gear, not really because FSI. Its also a bad race to pick because without a shrink bracer you get stuck everywhere in the game.

Theres a lot of pros and cons to every war race pick and a lot of it comes down to just personal preference.