Comparison of MIVEC, VTEC and VVT

This is an interesting video that compares all the famous engines of the 90's that had variable timing. The video compares the characteristics of the all famous MIVEC 1.6, VTEC 1.6 from the N1 EG6 and the VVT from 4A-GE 1.6 20 valve, as we all know from Takumi's AE86. Watch the video ahead. I am not that good with Japanese, but I roughly understand what the video meant