Under the governing body's four-tier rating system "very good" is the highest possible, characterising a pitch with "good carry, limited seam movement, and consistent bounce early in the match".
"It is simple. Brainless batting and bowling lost England the match."
Bumrah stood in as captain for Rohit Sharma, who missed the opener due to the birth of his second child, leading the tourists to a stunning 295-run victory on day four.
At the break on day four, Australia were 104-5 with a defiant Travis Head not out 63 and Mitchell Marsh on five as they chase a near insurmountable 534 to win.
The Pakistan-born opener was reprimanded by cricket's global governing body on Thursday for wearing the armband during the 360-run win over Pakistan in the series-opener in Perth.
"Any sort of moment you can get to have a few days or a week just to get away from the game and get your mental side back to a position where you can go out and perform internationally, it's important," he said.
