Complex sentence: Senna's 1988 pole time was 0.481 slower than Berger's time in 1987 while Berger himself, driving an updated version of his 1987 Ferrari, was 2.25 seconds slower than his 1987 pole time of 1:17.267.
Split into simpler sentences: Senna's 1988 pole time was 0.481 slower than Berger's time in 1987. Berger, driving an updated version of his 1987 Ferrari, was 2.25 seconds slower than his 1987 pole time of 1:17.267.