Pretty much yes. From the Blades' SRD

Tier

Each notable faction is ranked by Tier—a measure of wealth, influence, and scale. At the highest level are the Tier V and VI factions, the true powers of the city. Your crew begins at Tier 0.

You’ll use your Tier rating to roll dice when you acquire an asset, as well as for any fortune roll for which your crew’s overall power level and influence is the primary trait. Most importantly, your Tier determines the quality level of your items as well as the quality and scale of the gangs your crew employs—and thereby what size of enemy you can expect to handle.

What the SRD doesn't mention in that part is that when there is a tier difference between your crew (your tools etc) and your opposition you get more/less effect. Generally how I run it if there is a +/- 1 tier difference I change the effect. Larger difference I either set up a clock or let the player's know they don't have what it takes (impossible task within certain parameters), that is if the opposition is higher tier. Flipped if the Crew overpower the opposition by that much there is no need to roll, they just do it.