I don't think screen shots will prove anything really since it can be made up, better to do the testing yourself and see whether it works or not
Computer AI is really easy to exploit - I think that's the main reason why it can be so much easier for some and the garrison script does not help them much either. Don't get my wrong, not saying VH/VH is easy overall, but for the overpowered factions (better units) then it is considerably more easier. I have finished the Rohan/Silvan Elves/Gondor campaign in less than 100 turns on vh/vh long campaign not because is extremely easy, but there are ways to get around and explot the stupity of the AI, you would need to command almost all battle yourself though.
Key Strategies used (exploit as much as you can lol):
* Siege battle - attacker: 90% of the time, the enemy will sally out when the odds favour them (2:1 or less) especially when you have a more calvary based army since they are less in numbers. I do not know how this is being calculated but we all know is not accurate and if micro'ed properly, you will dominate them when they sallied out, who need seige weapons? split your force and siege with less units against the enemy. (have archers fire with flaming arrows and calvary charge non-anti cav units - require quite a bit of micro'ing, but you can win almost all 2:1 odd battle without much casualties)
The most effective way is to use 4-5 generals in one stack, the units will replenish after each battle for free and are the best unit stats wise.
* Siege battle - defender: always sally out if you have archers - figure this out why yourself

* Trap the enemy to use army from settlement as reinforcement: do not attack right away, wait for a small stack unit to appear near their settlement then attack. They will retreat, then attack again which will bring out reinforcement from their settlement. Destroy both forces and you have yourself an empty city to take.
* Generals with "Night Fighter" traits: most time the enemy does not travel with full stack, the units will fight if they have reinforcement, use the "night figther" and you practically guranteed a win with minimum loss. keep doing it and cut down their armies. This will also acquire command and dread for the general really quick.
* Acquire dread traits: more fights = more dread, so much faster to route the enemies.
* Fight on higher grounds if possible.
That being said, I do not use any type of scientific method or template, just fast expansion using these strategies. Playing as Rohan, I have destroyed Isengard in 7 turns, exapanded all the way to the black gate and pretty much pushing into Mordor very early in the game. Just more ways to exploit the poor computer AI. You can try out these key strategies and see if this will help your gameplay.