Well it seemed a bit surprising to me that a level 1 and a level 4 mob would be the same, but it's true that it's not really much of a level difference in the absolute sense, although it is in the relative sense. As it turns out though, i think they are different. I've got three collections of over 1k attacks each for punies and the stdev is small (1-1.5 %), so going forward i think 1k data points should be more than enough for a mob, at least to get a range within a few percent. The kerb data is "only" 524 attacks, but look at what we see:
524 attacks: 174 hits (33.2%), 98 evades (18.7%), 252 misses (48.1%) for Kerberos Provider
1718 attacks: 526 hits (30.6%), 306 evades (17.8%), 886 misses (51.6%) for caudatergus puny
1789 attacks: 508 hits (28.4%), 364 evades (20.3%), 917 misses (51.3%) for caudatergus puny
1171 attacks: 338 hits (28.9%), 231 evades (19.7%), 602 misses (51.4%) for caudatergus puny
Average: 29±1% hits, 19±1% evades, 51±2% misses for puny
The evades are essentially identical (that's the skill check belonging to the avatar's Evader level), while the mob's "hit ability" is different, with the kerbs hitting about 3% more of the time (or alternatively missing 3% less). Now i need stats for an avatar with much lower and much higher evader on one of these two mobs.
All you have to do is move or delete your chat.log file in the Entropia Universe folder under My Documents before you start the hunt, only hunt that one mob maturity, and then send me a copy of it.