Cost of repairs and availability of parts...Toyota wins no question.
The Armada didnt sell very well in comparison. Sure don't see many around.
Have seen a number of mid teens Infiniti with direct injection v8 version with timing chain issues, high and low pressure fuel pump issues and catalytic converter failures causing codes but usually not drivability problems from the cats.
Gotta watch rust and transfer case actuators on those sequoias. Replacement requires splitting transfer case and as of last week the actuator was over $2k from Toyota...Chinese knock off stuff out there for few hundred but I wouldnt risk it for that sort of repair.
Sequoia 4.7l cam seals over 200k can leak...thats a but of a chore on vvt models.
They also like to rust out power steering racks.
Those things said...Id still far and away go Toyota over Nissan on anything. Easier(not alot) to work on, cheaper to fix, more parts availability both new and used and solidly reliable overall...at least they used to be...see how these '22+ trucks/suvs hold up over next 10 years...I hope I'm wrong there.