Fractora RF vs CO2 fractional for hypertrophic scar?

I have a under the skin raised scar on my nose which I have been having treatments on for years. I began with fraxel dual and had moderate improvement however am looking for more treatments. I have undergone a co2 fractional laser, but am disappointed with the results. I was expecting a bigger improvement. I have been researching Fractora and am looking to get opinions on if it is better for treating hypertrophic scars than CO2 laser