The point was to equalize the variance of the numbers among different eras by looking at how the all-time greats statistically stacked up to their peers during the time in which they played.
What this means is, even though this new series takes a lot of inspiration from the Ultimate Spider-Man comics, it is also looking back to those great past eras as well and lifting the best and most important elements, to remain faithful to the full 50 years of Spider-Man history (a 50-year anniversary that is official this August, by the way).