The top four was an extreme closed shop for 4 or 5 years. Jol managed to finish 5th two season in a row (one year being extremely unlucky on the final day with half the squad coming down with food poisoning). His net spend during that time was £6 million in '06, £6 million in '05 and £13 million in '04.
Then when they stepped their spending up a notch (£40 million in 07) he was given the boot after 2 games of the season. They had Ramos for a year then spent another £40 million in the summer of 08. Redknapp came in and steadied the ship but essentially took over a much improved side from Jol and finished 1 place higher, helped out by Liverpool having an abysmal season compared to the previous 5 years.
Not massive progress at all and certainly not done a better job. He's just lucky that that Ramos in between makes him look like he turned round a terrible team when it was anything but.