A fair shootout should not only show examples at which a device is best but also at which the result is questionable or a matter of taste. The "Xtreme" setting of the first drum sample (example 4) was trying to show that some compression tasks are probably done better with other devices. Same for the piano (example 3) - the result is not bad, but if you think high end and purest sound quality, maybe you would not want to treat a piano that way with any compressor at all (e.g. if using some kind of digital playback, volume automation itb and only using the 747 for EQing may offer a better result for the piano example).
The "Optimum" setting of the first drum sample (example 4), the synth (example 5, glad you liked it) and regular compressed drums (example 6) then showed, in my opinion, that by not trying to go beyond the capabilities of a device there are a lot of possibilities. A good tool used in the wrong way may be regarded as a bad tool.
I think the 747 has a lot of good qualities. Very important for me is its transparency compared to some other devices. To my ears the examples show, that the 747 does not get in the way of the original sound, even though some examples were done with serious amounts of compression and EQing. Isn't that remarkable? Of course the 747 is there somehow a little, surely in a different way than some other more high end devices. But it does not loose a lot of details nor does it add much colour to the sound by itself (though you can use its EQ and TSP for that, see example 5 and 6). On the other hand, when people want to colour their sound, these qualities are not what they are looking for. And yes, there is always a bigger fish (e.g. the compressor shootout, example 1).
I hope your 747 arrives soon.