Giddens had offers from Arizona, Kansas, Indiana, Florida, just to name a few coming out of High school. Again, not sure where this "Matta needs to recruit better". Giddens could have easily chosen Arizona or Kansas, which are not exactly chop liver.
1) People need to stop using Giddens to evaluate the other 2 departures. Mickey and AJ were not the same caliber of recruit as Daniel. JaQuon was ranked higher, as was Austin, though he bailed immediately. Did scout rank the class high enough that they should have been decent, at least in a year or two? Yes. Was it a high level class? No. Should it have been downgraded further with a few drops in rankings? Yes.
2) Offers are introductions these days unless you're foolish like Beilein.
3) In the 2015 class, Kansas signed 5* C Diallo and high 4* PF Carlton Bragg (from Cleveland). I'm not sure I buy that he could easily have chosen Kansas.
4) In the 2015 class, Arizona signed three 5* (SG, SF, PG) and a 4* C (Comanche). In the 2016 class, they signed three more 5* at SG, PG & PF. In the previous class, they signed C Ristic (4*), 5* SF Stanley Johnson, 4* PF Craig Victor (also high 4* PG Jackson Cartwright). I'm not sure I buy that he had free reign to choose Kansas.
5) Kentucky signed three 5* in 2015, five in 2016 (plus a high 4*) and will undoubtedly land more in 2017 (considering they signed 19 of them from 2010-2014). I'm not sure I believe that Kentucky is willing to give him a full ride (especially with a year off penalty)