I think Keenan sees the truth: Bertuzzi is better than Frolov or Brown will ever be.
And Auld ~= Garon.
The current Bertuzzi really isn't that much better than Fro.
PPG in 05-06:
Considering that Bert has an expensive contract, is on the downside of his career, and is carrying the weight of the "incident." And also considering Frolov is young, has tons of upside, and is signed to a long term cheap contract, I would say that:
Frolov > Bertuzzi
As for Brown it's too early to tell. But keep in my Brown's stats are fairly similar to Bertuzzi's in his first few NHL seasons. Also Keep in mind that Bertuzzi didn't hit the 20 goal mark until his 6th season in the NHL. I predict Brown will hit 20 goals either this season or next.