Exeggutor with ZH/Psychic for attack?

I do dodge, and i prefer the quick attacks that are faster, so for me ZH is better. In addition, has more dps. Why should Confusion be better than ZH on attack?

I take it you're assuming that most of the time you're using Ex vs. Vape? Whose quick move is so fast that you can only do 1 attack in between dodges either way?

Vs. Vape or someone with a quick move like Water Gun I'd definitely agree with you. But it's worth noting there are plenty of Pokemon with longer quick moves where you could sneak an extra ZH in

Everything other than Snorlax/Lapras is defeated easily by something in Pokemon which is why they are "tier1"

There are much better choices like Pinsir for defeating Exeguttor than Seaking. A seed bomb Exeguttor even with dodges are going to put a hurt on the water type Seaking.

But Look at Tier 1.5 List
Vapereon vs Venausar (Or other big grasses)
Exeggutor vs Pinsir (Rare) and other Bugs
Dragonite vs Lapras (Rare) /Cloyster

Exeggutor is comparable in how it survives to Dragonite.

Best Pokémon to go up against an Exeggutor in terms of typing is Venomoth with two Bug moves. But Exeggutor with Psychic is one of the best defenders, as the attacker who you use against them won't have typically have resistance against it.