Inferior to what? I have yet to find a browser that blocks ads on Android as efficiently as Firefox+uBlock.
The old version of Firefox for Android (Fennec) had several important features that never made it into the rewrite. I understand they wanted to address architectural issues and improve performance, but the net result was that one day you opened up an app you'd been using happily for years only to be presented with a buggy, more limited alternative that was barely recognizable.
Things are a little better now, but you still can't print, install arbitrary extensions, save offline in reader mode, and more.
As for ad block, I use DNS based blocker apps like adgarud on my phone.