Hi Drexter,
A33 is a DSLR with much larger 1.5x crop sensor! ! ! It's unfair to compare it with any "point and shoot" camera. Of course its better with a lot of potential and possibilities since you can change lenses to suite your requirements / needs
Comparing LX3 vs LX5 is fine since both are in the same class. LX5 is better, with slightly better IQ / less noise and HD video recording + a longer zoom range and the same excellent f2.0 Leica lens
Having said the above, if you already have a LX3, LX5 might not be a worthy upgrade.
Cheers.
Faisal.