I don't think Rec 2 and AOW is an apples to apples comparison to even warrant the cheaper/"inferior" debate. They serve completely different purposes. Going the Rec 2 route just to get 100' on one of your C-cards seems like the wrong reason to do it, IMO.
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Honestly, I can't think of a use case for Rec 2 - I'd love to hear about someone's experience with it and why they decided to do it. On that same note, a lot of GUE folks don't see the need for Rec 3 but I did for my needs and current goals/dives, so I'm sure there's someone out there who found Rec 2 similarly useful.
My understanding is that, if any comparison can be made, Rec 2 would be like GUE's version of other agencies' Rescue courses, and Rec 3 would be like GUE's version of their Deep Diver course. Rec 2 doesn't seem to attract a lot of interest. I can't recall anyone on SB mentioning they had taken Rec 2. You're one of the few to report on taking Rec 3.