What are the worst arguments that you've ever seen?
Scaling games is a pretty complex since you need to know what you can use for scaling and what is just part of the "gameplay factor". Saying Terrarian can beat Steve because he has more HP and higher damage numbers is like saying that Terrarian can beat Doom Slayer because he only has 125 HP and his punch only deals 1 damage.
I've already seen a lot of discussions about Terrarian x Steve and is a pretty complex topic, since both characters appear to have unlimited strenght and the communities insist on dug up this argument. Both characters are also slow af, Steve biggest speed feat is probably being capable of dodge arrows (or that thing with lightning if you force a bit), and Terrarian has the Stopwatch, a item that shows the Terrarian current speed (at endgame is something around 120 mph if you use some items) and can be used as a statement since it is part of a set of items that shows "cannon" information about the world like the moon phase, time and other things.
Then having in mind that both characters are praticaly equal physically (base steve is probably faster), what will say who is the winner is the gear that they can use. Steve has pretty balanced fight during the Pre-Hardmode since, with the exception of magic and summoner items, the rest is a pretty similar (iron, gold, netherite/hellstone armor) . But in hardmode Terraria armors and weapons can casually obliterate the minecraft world.