Wall's season this year isn't even as good as Rondo's season this season. 4 more assists per game means 8 additional points scored by his team. Wall is only averaging a little more than 4 PPG more than Rondo. Then factor in Rondo rebounds more, steals more, and shoots better and that Rondo had to carry this team for most of the beginning of this year and I think Rondo's year this year is much better than Wall's.
Rondo has led the league in assists for three years with over 11 per game. He's led the league in steals. He is a constant double double guy and has been a perennial top 1-3 in the league in triple doubles for years. He's been on the All-Defense team 4 times and been a third team All-NBA.
Sorry, nothing Wall has done in one season has exceeded what Rondo has done for 2-3 of Rondo's seasons.
I guess my feeling on this is that Wall could average close to 10-11 assists per game if he had teammates who could make buckets. In fact I think there was a statistical study done a season or two ago that suggested that the main difference in assist total between Rondo and Wall is that Rondo's teammates finish the looks he gives them more often.
I don't think Rondo could ever do what Wall has done this season, especially what he's done in the past month or two.
I know people who defend Rondo at all costs disagree with this notion, but in today's league a point guard who scores 18-25 points a game while still picking up at least 6 or 7 assists and a healthy number of rebounds is much more valuable than a 10-10-2 sort of player, unless the latter is on a team with a handful of top shelf scoring options.
The Celtics would have been better this season with Wall than Rondo, in my opinion, because the Celtics really need a Wall-like athletic scorer more than they need a distributor. If we were talking about a team like the Clippers or the Spurs or the Grizzlies, I would probably feel differently.
Also, those who talk about Rondo's edge as a defender over Wall should think back to Rondo's defensive play earlier this season and really question whether that helps their argument all that much.