Seriously, it is not in the troops you use, but how you use them. Do not just use some generic attack with some generic name. You can distract inferno towers just like any other defense. Draw fire, and go in for the kill, regardless of the troops you use.
I was taking out inferno towers as a TH8. I find it laughable that someone would claim a TH9 does not have the option of defeating inferno towers.

