Those are very unimpressive improvements, and the methodology has problems:
1. No raw scores given in the notes only ratios, so 32bit performance could be artificially low. No way to compare with the competition. What are they afraid of?
2. Unclear if 1 or 2 processors used, notes only say "processors". I think 2 is more likely...
3. DIFFERENT amounts of memory in the machine!!! 4GB in 32bit test, 8GB in 64bit test. This alone could be responsible for much of the improvement.
upc