It is a mistake, no current AMD CPU has the processing power of Intel chips for Premiere Pro. They lack certain instruction sets or are a poor implementation of others.
A10 7850K is on par with 4th generation i7 processors in terms of instruction sets. On the speed isssue, I can overclock it from 3.7Ghz to 4.5Ghz - 4.6 Ghz but that still probably won't be enough to catch i7 3610QM.
As a general rule of thumb, AMD CPU's are not worth considering at all, since they suffer severely from the very limited and badly implemented support of SSE 4.x instructions, which are widely used in PR. That makes these processors very slow, even in the 8-core versions. You get what you pay for, and with AMD that holds very much. Even though Adobe claims AMD processors can be used, that is intended more to make PR look attractive, but it really means you can install the program on an AMD machine, however you can't edit effectively with such a CPU. Even the latest octo-core AMD's are significantly slower than middle-of-the-road Intel quad cores. If you have an AMD processor, do not expect to edit comfortably any codec more demanding than DV. All phone or action camera formats are way beyond what an AMD can handle.
AMD processors are not suitable for editing.