I find the manner in which the question is posed rather opinion-oriented. Nevertheless, I try to give a few objective add-ons.
Both missions have been great technical successes, having very different mission requirements, spacecraft designs and concepts of operation.
When looking at the scientific return, objectively Rosetta has blown it out (count it in number of Science/Nature/etc. publications and count the amount of new geophysical models for pristine solar system bodies. The comet has told us so much, that few weeks ago NASA has approved budget for supporting a mission concept to revisit the body.
Rosetta was, at the very origin of the project, conceived as an ESA-NASA cooperation, where JPL will build the lander. However, politics aside, Congress cut the flow and ESA had to turn to DLR to build a lander with limited budget, limited mass and limited volume. Therefore, Philae's platform had no steering (active AOCS) in contrast to Hayabusa, which was a fully-equipped platform.
The landing sequence for Philae was pre-planned. Philae didn't control its path, it was the comets inhomogeneous gravity at ~1m/s for several km. Propagate your uncertainties... Still, the landing was pin-point, damn the rebound on that hard rock.
Hayabusa performed an inertial hovering followed by a touch-and-go sequence. The operation was rehearsed twice before. The sample was taken with the equivalent of a vacum cleaner on a dusty body with such low density you could put your arm through and come out on the opposite hemisphere.
One important requirement in sample collection is to prevent contamination of the sample by the system and the environment. Specially during re-entry. For the small sample of Itokawian dust that was recovered, isolation conditions could not be proven. So most likely some material from spacecraft outgassing went in there. This could not be proven one way or the other. Nevetheless, technically speaking, this operation: sample capture, retrieval and re-entry was a breakthrough. And in fact, OSIRIS-REX is just going to try and repeat that on asteroid Bennu with a load of lessons learnt. I personally look forward to the science return and wish for a lot more data coming down this time.
So if you ask, why such a big boom for Rosetta, the key is, the few hours of experiments on the surface helped give context to large set of extended science observations by the orbiter. Something that had never been done before on a small body (be it a comet or an asteroid), actually only on Mars. This got the whole community very excited, for a good reason.
As an engineer, I understand the voices of "this wasn't a real landing", "this was luck", "it was a failure" etc. But you know, JPL redefined the landing gear of their next comet sample return proposal when Philae's harpoons didn't work. This is what erros are made for, to make it better the next chance. And this involves all agencies and all countries collaborating instead of competing to win a front page. It also involves the general public understanding the importance of each mission out there. Some prove technology, some bring a science storm. Let's leave politics to politians ...