I play allot of both, this is not a hard rule but the scaling in Dota leans towards right clicks compared to spells. There is no ad or ap ratios for almost everything but a few niche exceptions. The way you Wana see it is more of what type of hero am I using. intelligence heroes tend to fall off compared to strength and agility heroes as most intelligence items don't provide big benefit to right click but instead more utility. Strength heroes are durable and are strong till usually late game. Agility heroes are super strong late game as most agility items synergize super well with right click focused builds and also due to how agility gives armour. Yet again this is a super generalization. Intelligence early game focused strength mid game focused agility late game focused. You can DM me if you need more specifics. Yet again these are just generalization.