A few things:
Tabata protocol = 170% VO2 max, that is Tabata, unless you are there, what you are doing is moderate HIIT, true HIIT is over the 100% mark, something that CAN'T be done for more that 20 seconds at a pop and needs a 2:1 ratio ( 20 seconds on 10 seconds off of NO activity).
All the studies that show the uber-awesomness of HIIT usually bring up the Tabata results but for some reason forget to mention that way they got them.
Moderate HIIT is what 99% of all people that do HIIT, do.
As for boxing being Anerobic of aerobic or both, it is both, but obivoulsly more anerobic than aerobic, it is, depending on the sport- 3 minutes on, 1 minute off, or 2 minutes on 1 minute off.
Notice the aforementioned 2:1 ratio and the 3:1 ratio?
Typical HIIT.
Lets not forget the explosivness of boxing, another anerobic trait,
Pretty much all modern boxers and sport trainers have acknowledged the majority of MA as more anerobic than aerobic.
Psalms 144:1
Praise be my Lord my Rock,
He trains my hands for war, my fingers for battle !