They had talked about there being ratchet clauses in the deal on 360 last week to be fair, wasn't just made up last night, but the journo (Brent Read I believe) specifically said even with the clauses the salary could only ever go up to $1.4m. Braith was talking about the new TV rights deal making the cap jump significantly like it would mean Brown's deal would also go up at the same rate, either ignoring or forgetting what was said on his own show a few days ago.
If the above is true then the potential deal could age pretty well, although things are never that simple in rugby league. If he's performing well on $1.3-4m and the cap goes up by a lot you can rest assured his management wouldn't just be sitting on their hands, they'd be looking for an upgrade.