I'd really place the SW as above the SI in just about every regard. The SW is the one who manipulates and plots while the the SI is the one who just blows stuff up.
Yeah kind of a shame that the SI is the 2 kilos of solid iron though.
other way round sith warrior is the one blowing up stuff and Si plots
but to be honest warrior is strong in the force they just don't want to learn so much about power just like darth vader
and Si is like revan. revan was looking for star forge the hidden power and that's what Si does