Yes, slowing down the enemy gives you a significant advantage, but it doesn't guarantee victory. However, I have a question for you, though it's slightly off-topic: what's the point of scouting? It seems to me that scouting is completely useless, at least in "Heroes 3: Armageddon's Blade." What's the benefit? It just reveals more of the map, so what?
And you're wrong to think that the Swamp army is weak. Oh, how wrong you are. They have many abilities. Just the basilisks alone are worth something, right? Sometimes, half the army is paralyzed by basilisks. And the gargoyles, which tear through level 6 and 7 creatures like nuts? They'll kill even more with their gaze than they do with a normal attack. And the wyverns, which poison? Your opponent will be happy when their phoenixes, for example, lose 25 health points each turn. You can take down those phoenixes with them. And the snake-lings, which not only dispel spells but also inflict weakness? And the hydras, which attack everyone around them (even if they are weak)? Well, I agree that the archers are weak, but everything is compensated for (as someone correctly pointed out in another thread) by the army. Yes, they have relatively low health, but the defense skill of the heroes and creatures is very high. I used to think that the Fortress was the best in defense. Look at how the hero develops in the skills that are given to him for each level (don't count the ones you choose yourself), look at the statistics of the creatures, at their defense. Everywhere, the defense will be very high. You may disagree with me that the Swamp is good, but believe in their strength. Even the Tower (which is the strongest in magic and has a good army) can't always cope with the Swamp. I really like the Swamp, but now I'm expressing my opinion about it independently of my sympathy for it.
Added 8 minutes ago
You're wrong, my friend, the strongest attack is with the Orcs (Stronghold). Look at their heroes, and also look at how I told you to look at the Swamp - for most heroes-knights of the Stronghold, attack is given for each level, and for the Swamp - defense. The Swamp has the strongest defense. And it's not easy to defeat the Swamp. Only all creatures except archers and gnolls have protection.
And you're wrong, man, to dislike knights so much. Yes, when the armies are not yet developed and are small in number, a mage is much stronger, but excuse me, when the armies are huge, magic can't really help much. Moreover, you can make a decent mage out of a knight, just as you can make a decent knight out of a mage. And when the game goes on for a long time, you can turn a once ordinary Swamp hero into not only a great knight but also a mage, by visiting cities with level 5 mage guilds and taking mage artifacts. It all depends on the skill and dexterity of developing the hero. And even on a little luck.
But you've convinced me about the defense. Let's talk about the tactics of playing as this race. The speed of the units doesn't allow you to immediately rush the enemy, and waiting for guests without strong archers means taking losses. The Swamp definitely loses to everyone in terms of archers.
Only the snake-flies move normally, but one is not a warrior. You know how quickly they die.
With other races, level 6 and 7 units can reach you in one turn (Necropolis, Humans, Inferno, etc.). As a result, there is a lot of damage, supported again by archers.