Ive seen that video before. Biased bullshit. You can find videos of T-90s being rolled, getting stuck in mud ect.
As for the Abrams weakness. Well the Abrams it currently the most combat tested tank in service right now. No tank has gone through as much combat, the only one that comes close is the Challenger 2, but it still wasn’t tested in urban combat like the Abrams.
It’s easy for a video to go on how great a tanks armor is, when it’s never really been in a real combat situation. I guarantee you the T-90 has all kinds of flaws like all other equipment, but the only way you find out those flaws, is by sending them into combat.
And that is probably the greatest advantage the Abrams has. We’ve weeded out all of its flaws.
Also the video is out of date, and should include TUSK, which has been added to many m2s.

The video should have included pictures like this. Tanks of any size are capable of getting stuck in the mud, hell light weight cars are.
The TUSK upgrade gives the tank a lot more armor, because we found it they were vulnerable to IEDS, RPGs to the back ect.
So they should do a video on that.
The T-90 could very well be better than the Abrams, theres no way of knowing without them actually fighting.
And then it comes down more to the skill, and experience of the tank driver, which the Abrams has the advantage in.