Thomas Smet
Veteran
In a way we are - internal codec against internal codec. Granted the internal codecs aren't perfectly equal, more like a Granny Smith (GH4) against a Red Delicious (BMPCC), but I'd wager the battle of "internal codecs" applies to more people than not.
If you only care about going the easy route yes but to only use the internal codec on the GH4 is not using the camera to it's full potential. Panasonic gave us options with the GH4 and if you choose to completely ignore one of the key benefits of using the GH4 that is your choice but in terms of describing what the sensor can do you really need to level the playing field and see how similar formats perform across both cameras with a similar post workflow. There are just too many variables at play there.
You can now add external HD recording to the GH4 for $295 so really there are no excuses anymore to consider it an unrealistic option.