I hate to say it, I liked the V30 in that video. The Mark V90 is probably not a good example for a speaker test as the Mark VII sounds nothing like it. It may be similar but different.
V30 performs much better in a closed back cabinet than open back combo. Not all V30 speakers sound the same. The version that Mesa is currently using is the upgraded voice coil, I would assume the video was using that version considering the Mark V90 came out in 2009. Between 1999 and 2004 (if this is correct) Mesa was using the 70W V30 which are not very good as they flub out so easily. The oversized recto cab I bought in 2000 had the 70W V30 which I felt was unusable. I changed over to the EVM speaker in that particular cab. I do like the 60W version Mesa is currently using. I think they sound much better.
The bottom line is how good does the Mark VII sound with the MC90 as that amp is more balanced and not boxy in tone like the Mark V90 is. If you need to play at gig level or stupidly loud I would highly recommend adding an extension cab. When running a 4 ohm load with the Mark VII, JP2C and may as well include the Mark V90 and Mark IVB, you do have a tone change and some of the peak brightness is reduced a bit. You will gain more SPL with two speakers vs just the one so you do not need to drive the volume up as much.
What I found with the EVM12L speaker in general (this is excluding the Mark III as that amp was loud to start with) is when you try to run the amp at bedroom level, it may tend to sound sterile. When the volume goes up, it just sounds really good. Just a comparison, the Mark V90 combo I have loaded the EV (at the time it was the black label speaker) with a deep extension cab with the same speaker was much louder than using the 412 cab loaded with V30 speakers.
I cut the back of the extension cab as it was too dark in its closed back form. I do not remember where I got the extension cab. It was not a Mesa product.
the MC90 is a decent speaker in most respects. I much prefer something different. Just a hint on the MC90, do not use it in a closed back cab that is not ported. If you do that, the voice coil vent will become the pressure port as that screened port on the back of the magnet extends through the entire core of the speaker. If you do not believe me, shine a light from the back side of the speaker and loot at the front, you will see the light through the dust cap. MC90 is for open back or ported cab only.