The R32 has better handling from very similar suspension geometry but less weight. The R33s suspension was revised to spread the load on the upper control arm over a larger area resulting in the bushes lasting longer.
R33 has superior engine though.
Which is faster is another matter, are you talking lap times, straight line or something else? Lap times are hard to say as there are a lot of variables.
But straight line, simplistically R33 is ~5-6% heavier but has ~16% more power, so R33 is faster.