It has been correctly pointed out that bowling standards have fallen alarmingly over the past decade and a half. Sachin and Lara were facing world class bowlers like Mcgrath, Warne, Walsh, Ambrose, Pollock, Akram, Cairns, Younis, Murali and Kumble. Today, that list would probably only include(in case of Ponting) Ntini, Bond, Akhtar, Kumble, Murali and maybe Pathan. Also, pitches have flattened out a bit all over the world. This age is perhaps the best if you're a batsman and worst if you happen to be a bowler.
In this regard, comparing Ponting to Tendulkar or Lara is not entirely fair. Stuff like 16000 runs etc is fantasy - He MIGHT get there but it certainly isn't something that can be predicted. I remember when Tendulkar got 50 international centuries all the 'experts' (Sunil Gavaskar among them) predicted that he's easily going to end up with 100 centures (which is a rather distant possibility now).
Ponting is on a roll. He's in excellent touch and has got the support of a superb team (and shoddy fielding by opponents is not unwelcome either
). Let's see if he can mantain the tempo and for how long.