Only 4 x A320 series events in which passengers were fatally injured against 47 for the 737 series...
I like a good Boeing bashing as much as the next guy (cxorcist excluded). However, your link shows is that there is (or was in 2004) little statistical difference between the 737 series and the A320 series and, if I'm reading the table correctly, the 737 is (or was then) safer than the A320.
STP