I don't think he was a "baby" predator.
If you look at the movies, you see a similar characteristic to today's military [a basic comparison]. You have basic soldiers, your experienced soldiers, and your elite [special ops units]. The P1 was an experienced soldier, by comparison. P2 was more of a soldier, not too experienced, but enough to know what he's doing. Then you have AVP--these guys were basically at the end of boot-camp and fell over the finish line. Have some knowledge of what to do and how to do it...very little to no experience. The you have Wolf..."The Cleaner"..."The Assassin". He, to me and in my opine, is right before the Elder stage. he's been through his fights, extremely experienced and dangerous...he's a Special Ops. P1S would probably be like P1, but perhaps a little less experienced.
The New Breeds of Preds [BSP, Tracker, and Falconer]. They're like the game "Army of Two". They were most likely in a regular clan, doing the regular clan things. They wanted to do it "their way", so they left. They perhaps started their own clan or just formed an alliance between them. Their comparison really varies from somewhat experienced to very experienced, but I wouldn't categorize them as a Cleaner Level.
How I would rank it [leaving the New Breed out] from top to bottom:
Wolf [Cleaner, very experienced--special ops]
P1 [experienced-ranking soldier--officer]
P2 [somewhat experienced]
AVP [little to no experience, only knowledge]