What are you trying to say here? Gretzky getting to 1,000pts at 23 doesn't look that much better than Lemieux getting there at 26 because Lemieux didn't play at 18 or 25? (1) What are you talking about in terms of Lemieux not playing at 25? (2) Gretzky played 45 games at the age of 18 vs. 0 for Lemieux simply because their birthdates. No matter how you look at the stats, Gretzky's is almost beyond comprehension.
Another way to look at it is games played....Gretzky got to 1,005pts in 424 games, Lemieux got to 1,001pts in 513 games. Both impressive, obviously, but Gretzky still got there way faster. On the age thing, one could then argue Gretzky started in the NHL younger at 18, so wasn't as experienced as Lemieux who came in at 19....so Lemieux had the advantage.
Regardless, I simply look at some Gretzky stats and chalk them up as mind blowing....by game 513, he was up to 1,225pts.