Yes, the same metal level plans are comparable since the coverage all health insurance has to provide is the same in the US (excluding the weird church plan loophole but they are not actually insurance and no one uses them)
https://www.healthcare.gov/choose-a-plan/plans-categories/
What will change is the network of healthcare providers that are in network for you. This is how I think price discrimination will work in healthcare in the US going forward.
A more expensive silver health insurance will have more doctors in network since it will reimburse at a higher price (from your or your employer’s higher premiums). A less expensive silver health insurance will have fewer doctors in network, since fewer doctors will accept that price. Or it will have overworked doctors, or you will have to see nurse practitioners or physician’s assistance instead of MDs.
If you find your employer’s in network doctors worse, then it is basically a stealth pay cut from one perspective.